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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram

Prekom

Prekom
About Prekom

Prekom for Porsche

Prekom is a family-run business specialising in steering and suspension parts renovation and manufacturing, with a strong focus on Porsche applications. Their range covers stock replacement steering and suspension components for Porsche models, supplied through Design911.

A Quick Look at Prekom

The Prekom family passion has always been cars, technology and aiming to do things that they like the most. This spark led to the start of production and renovation of steering and suspension car parts in 1978, and the second generation is now running the business. Over time they have focused on manufacturing and industrial renovation of aftermarket suspension and steering parts. After initially working across a wide variety of car brands, including steering parts for buses, transportation and construction vehicles, they have for the last two decades specialised in stock replacement steering and suspension parts for Porsche, Ferrari, Maserati and Lamborghini vehicles. Prekom are also OEM to several Porsche parts. Information on this page is based on details supplied by the manufacturer or distributor, plus any OE references provided with the parts.

Choosing the Right Fit for Your Porsche

Where Prekom parts are listed for Porsche, use the supplied model coverage and OE references on the product pages to confirm suitability. Pay close attention to details that commonly affect fitment such as model year, body variant, steering layout, side/position, and any notes about bushes, joints, or mounting style.

  • Typical reasons people replace these parts include wear in steering and suspension components, restoring precise handling and safety, and choosing stock replacement options that match original characteristics.
  • Common symptoms before replacement can include knocking over bumps, vague steering, wandering, uneven tyre wear, vibration through the wheel, and clunks when turning or braking.
  • Practical tips include planning for a professional wheel alignment after steering or suspension work, inspecting related bushes and joints at the same time, and replacing parts in axle pairs where sensible for balanced behaviour.

Browse by Category

If you already know the area you are working on, start with the category and then filter by Porsche model. Where real-world symptoms and typical reasons to replace are provided, use them to keep the diagnosis and parts choice grounded.

Steering Parts — Steering components from Prekom are used to restore precise control and feedback in Porsche models where listed. They are typically chosen when addressing play, knocking, or vague steering, and when you want stock replacement parts that work with the original system design.

Track Rods — Track rods (tie rods) connect the steering rack to the hubs; Prekom replacements, where available for Porsche, are used to remove play, improve alignment control, and bring back a direct steering feel during routine maintenance or front-end refresh work.

Suspension & Axle — In this area, Prekom suspension and axle parts for Porsche are aimed at bringing ride, stability and braking behaviour back to how it should be when original components have worn, with a focus on stock-style geometry and fitment.

Track Control Arms FRONT — Front track control arms from Prekom, where listed for Porsche, are selected to correct geometry, reduce unwanted movement and restore steering precision when original arms, bushes or ball joints have degraded.

Suspension Upgrades — Where Prekom components appear within suspension upgrade packages for Porsche, they are generally used to renew key wear items as part of a wider upgrade, helping keep geometry consistent while other performance parts are fitted.

Explore Prekom at Design911

View the current Prekom range for Porsche at Design911, then filter by model and category to narrow down to the right parts. Always cross-check product notes, OE references and fitment information before ordering, and consider professional installation and alignment for steering and suspension work.

DISPLAYING 17 to 32 (of 125 products)
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Special Offer
95134307500
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Product Information
Anti Roll Bar / Sway Bar Drop Link Inc Bushes, Front.
Renew the front stabiliser link of your Porsche 944 with this direct-replacement drop link including bushes. This essential component connects the anti-roll bar to the front suspension arm, ensuring effective roll control and front-end stability. Whether the old link is noisy, worn, or the vehicle’s handling has degraded, fitting this link restores correct suspension behaviour.
Sold Each.
x2 Required Per Car.
Fits Left And Right.

Fits:
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88


What This Product Does:
  • The drop link connects the front anti-roll (stabiliser) bar to the front suspension arms or strut assembly.
  • When the car corners, the stabiliser bar resists body roll by transferring load between the two sides; the drop link is the crucial link in this system.
  • The bushes included in this part absorb vibration, allow articulation, and prevent metal-to-metal contact.
  • Over time, bush wear or link fatigue reduces the efficiency of the stabiliser bar by allowing unwanted movement.
  • A healthy drop link ensures the stabiliser bar is engaged properly, reducing body-roll, improving cornering stability and maintaining consistent suspension geometry under load.

Symptoms & Signs You Might Need Replacement:
  • Clunking or knocking noises from the front suspension when going over bumps, or when changing direction—indicative of play in the link or bushes. 
  • Increased body roll or vague front-end feel in corners — the stabiliser bar isn’t being transmitted fully because the drop link is not rigid.
  • Uneven tyre wear on the front pair — worn drop links can cause the bar to behave inconsistently, affecting suspension geometry.
  • Visually: the link may look bent, the bushes may be cracked or degraded, and the link may move too freely by hand.
  • If your vehicle has been modified (low ride height, stiffer springs, wide tyres) but the stabiliser link is still standard/worn, you may feel the front end is lacking in stability.

Why Replacement Matters:
  • Replacing a worn or fatigued drop link restores the correct function of the stabiliser bar – improving front-end response, reducing roll, and increasing driver confidence.
  • Because this link is comparatively inexpensive and easy to fit, it’s often a high-value maintenance item—especially in older cars like the 944/968 where original components may be decades old.
  • Upgraded or new drop links help ensure the front suspension behaves consistently under load, aligning with other upgraded components (springs, dampers, anti-roll bars) rather than being the weak link.
  • For safety and handling: a compromised stabiliser link affects vehicle stability during emergency manoeuvres or spirited driving.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

95134307500
95134307500

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Special Offer
96433307403/6
Product Information
Product Information
Drop Link Racing Uniball Version, Rear Right.
Maximise the performance of your Porsche 911 (964) rear stabiliser system with this high-performance racing drop link. Specifically engineered for the rear right side of the 1989-94 911 (964 C2/C4/RS/Turbo), this part features a durable spherical uniball joint in place of the standard rubber bushing. The precision joint allows near-zero compliance, delivering sharper rear-end response, improved cornering stability and long-term durability. Ideal for spirited driving, track days or any 964 where rear suspension performance matters.

Fits:
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93

Diagram Ref No 18

What This Product Does:

  • The rear drop link connects the rear anti-roll bar (also called stabiliser bar) to the rear suspension arm or axle carrier. Under cornering, the anti-roll bar transfers load from one side of the rear suspension to the other, helping reduce body roll and maintain tyre contact.
  • In a standard link, the joint usually has a rubber or polyurethane bushing that allows articulation but with some compliance. The uniball version replaces the bushing with a spherical bearing which allows joint motion with much less compliance and greater precision.
  • The result: faster, sharper response of the stabiliser bar to suspension movement; less flex in the link; more direct force transfer; improved rear stability during cornering or dynamic driving.

Symptoms & Signs Of Wear / When To Upgrade:
  • Clunking or knocking noises from the rear suspension when going over bumps or during rapid direction changes — likely indicating wear in the link joint or bushing.
  • Excessive body roll or vague rear end feel in corners — if the anti-roll bar isn’t applying its load properly because the link is loose or soft, the rear end can feel less stable.
  • Uneven rear tyre wear (especially outer shoulder) or strange rear alignment behaviour — since the stabiliser may not be transferring load correctly under dynamic conditions.
  • If you’ve upgraded other suspension components (stiffer springs, wider tyres, track usage) and the rear still “feels soft” or delayed — the link may be the “weak link” in the system.
  • On inspection: you might see excessive play in the link joint, torn or degraded boots, corrosion, or a bent link. When an OEM rubber bushing link is worn, the uniball version is a logical upgrade path.

Why This Upgrade Matters:
  • Reduced compliance = sharper handling: By replacing a rubber-bushed link with a spherical bearing, you reduce unwanted movement. This means the rear anti-roll bar is engaged more directly, giving you a firmer, more predictable rear end under cornering.
  • Supporting other upgrades: If you have made other suspension enhancements (springs, dampers, anti-roll bars, tyres), then the standard link might become the limiting factor. Upgrading to the uniball version ensures your rear stabiliser system can operate at its full potential.
  • Durability and precision: Spherical bearings are more robust for high load/track usage. They provide longer life under high cornering forces compared to rubber bushings which degrade over time.
  • Safety and control: The rear stabiliser system contributes to chassis behaviour in transitions, over bumps, and in dynamic manoeuvres — if the link is worn or soft, the car’s handling rear-end can become unpredictable. Upgrading improves confidence.
  • Value for performance builds: For a performance or track-oriented Porsche 964, having high-quality suspension components (including drop links) is part of the upgrade footprint and contributes to the car’s usability and resale value.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96433307403
96433307401
96433307402
96433307403

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Special Offer
96433307403/5
Product Information
Product Information
Drop Link Sports 85 Shore Rating, Rear Right.
Upgrade the rear anti-roll bar linkage of your Porsche 911 (964 series) with this high-performance sports drop link. Specifically designed for the rear right side, this unit features an 85 Shore rated bushing for firmer response and enhanced durability. Compatible with all 1989-94 911 (964) models (C2 / C4 / Turbo), this direct-bolt replacement restores optimal stabiliser bar function, improves rear stability under load, and sharpens cornering behaviour. Sold individually to allow side-specific replacement.

Fits:
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93

Diagram Ref No 18

What This Product Does:

  • The drop link connects the rear anti-roll bar (stabiliser bar) to the suspension arm or axle link, forming a link through which the stabiliser bar can apply force between the two sides of the rear suspension when the car is cornering.
  • By transferring roll-bar forces, it helps reduce body roll, maintain tyre contact patch, improve rear stability and maintain chassis balance.
  • A firm, well-designed drop link ensures that the anti-roll bar is fully engaged under load without unwanted compliance, thereby improving handling response, cornering grip, and driver feedback.
  • Upgrading to an 85-Shore rated version means both less compliance (so fewer unwanted movements) and improved durability — especially important when using upgraded tyres, stiffer springs or track driving.

Symptoms & Signs Of Wear / When To Replace:
  • Knocking or clunking noises from the rear suspension when going over bumps or during aggressive cornering — indicating the link or its joint/bush has excessive play.
  • Rear body roll or instability: If the rear end of the car feels loose, shifts or leans more than expected under cornering, the drop link may be letting the rear stabiliser under-perform.
  • Uneven tyre wear on the rear pair, particularly on the outside shoulder — because the stabiliser link may not be transmitting forces properly, geometry may be shifting.
  • Visual wear: the joint/bushing may show cracking, movement, damaged boots, or the link may have corrosion or broken mount bushes.
  • Upgraded suspension: If you have lowered the car, installed larger tyres or firmer springs, the stock drop links may be too soft or worn out — the sports-rated link helps restore performance.

Why This Upgrade Matters:
  • Ensures the rear anti-roll bar is actively working: If the drop links are soft or worn, the stabiliser bar’s effect is reduced, and the car’s handling suffers (increased roll, slower response). Upgrading removes this weak link.
  • Improves handling precision: With firmer link materials and better joints, the rear end feels more controlled, the car responds faster and cornering stability is improved.
  • Matches with other upgrades: If you’ve upgraded other suspension parts (e.g., springs, dampers, tyres) the original links may become the limiting factor — a sports-rated link ensures the rest of the system functions at its potential.
  • Longevity & maintenance: The sports version (85 Shore) is likely to resist wear better than standard bushings—so less frequent replacements, better durability.
  • Value & performance: For a Porsche 964, having proper performance-related suspension parts enhances both usability and resale value.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96433307403
96433307401
96433307402
96433307403

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Special Offer
356040008
Product Information
Product Information
Ball Joint For Longer Tie Rod.
Restore the steering precision and integrity of your Porsche 356 with this ball joint, designed for the longer tie rod version. Suited for Porsche 356 models from 1950 to 1957, this ball joint accepts the conus FI10,7 / FI12,2 specification and features a housing thread of M14 × 1.5. Direct-fit for the tie rod end, it provides smooth pivot action, minimal play and dependable steering response. Ideal for restoration projects, returning classic steering geometry to proper specification, or replacing a worn joint.

Fits:
  • Porsche 356 1950-55

What This Product Does:

  • A ball joint provides a spherical pivot point that allows the tie rod to articulate in multiple directions (as the steering knuckle and linkage move) while maintaining a robust connection.
  • In this context, the “longer tie rod” for the 356 uses this ball joint at the end of the tie rod so the linkage can articulate and steer correctly.
  • As part of the steering linkage, this ball joint ensures smooth steering movement, correct tie rod/track rod geometry, maintains alignment, and helps transmit steering input to the wheels reliably.
  • Because it’s a pivot in the steering linkage, it must minimise play, move freely in all required directions, and handle load (steering forces, road inputs) without excessive wear.

Symptoms Of Wear Or Failure:
  • Excessive steering play or looseness, especially front centre or in the tie rod linkage — the ball joint’s socket may have developed excessive clearance.
  • Clunking or knocking noises from the front when turning the wheel or when going over bumps — a worn ball joint may allow movement that causes noise. General symptoms of worn ball joints: “Clunking or rattling noise… loose or pulling steering… uneven tire wear”
  • Uneven tyre wear, particularly on the front steer tyres — a worn tie-rod ball joint allows alignment to shift under load.
  • Steering feel degraded — less precise, vague, perhaps the car doesn’t respond as crisply to steering input.
  • On inspection: the joint may show torn boot or weathered/aged rubber, corrosion, play when you physically move the tie rod end and check for movement in the ball joint.
  • Because this is a component of the 356’s older steering linkage, age-related wear, corrosion or fatigue are likely.

Why Replacement Matters:
  • Safety & Steering Precision: The ball joint is a critical link in the steering chain of a 356. A failed joint can compromise steering control, alignment and vehicle stability.
  • Alignments & Tyre Life: A worn ball joint allows the tie rod geometry to shift as the vehicle is driven, causing misalignment, tyre wear, and steering problems. Replacing it restores correct geometry tolerance and helps retain proper alignment.
  • Restoration & Originality: For a classic Porsche 356, fitting a correct part (356 040 008) ensures the steering system is period-correct and reliable — an important factor for value and performance.
  • Prevents further damage: If the ball joint is worn, other components (tie rod, track rod, pitman arm, steering knuckle) may be stressed or move unexpectedly, leading to further wear. Proactive replacement avoids cascading issues.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

356040008
35647306

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Special Offer
96442101221B
Product Information
Product Information
Torque Tube Bearing Bushing.
Restore critical drivetrain support in your Porsche 911 AWD models with this genuine-spec torque tube bearing bushing. Designed for the Porsche 964 (1989-94) C4 and 993 (1995-98) C4 series, this precision bearing support replaces the internal bushing of the torque tube and ensures your drive shaft remains aligned, smooth and free from excessive vibration. Ideal for restoring worn drive assemblies, eliminating shaft rumble or clunk, and maintaining the structural integrity of your Porsche’s AWD drivetrain.
Sold Each.
x3 Bearings Required For Torque Tube.

Fits:
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93
  • Porsche 993 (911) C4 1994-97
  • Porsche 993 (911) C4S 1994-97
  • Porsche 993 (911) TURBO 1994-96
  • Porsche 993 (911) TURBO S 1994-97

Fits Inside Diagram Ref No 1

What This Product Does:

  • The bearing bushing supports the drive shaft inside the torque tube, allowing it to spin freely, in correct alignment, while the tube assembly maintains structural connection between gearbox and front differential (or transfer case) in AWD/4WD models.
  • It ensures smooth rotation, minimal vibration, correct alignment of the shaft, and keeps axial or radial movement within acceptable limits. This preserves drivetrain geometry, reduces wear on the shaft/flange joints and supports NVH (noise-vibration-harshness) control.
  • If the bearing bushing is worn or failed, the drive shaft may exhibit excessive movement, misalignment, vibrations, or clunking—leading to further accelerated wear of connected components (flanges, bearings, seals).

Symptoms & Signs Of Wear / Need For Replacement:
  • Vibration or grinding noise from the driveline, especially under acceleration, or at certain engine/shaft speeds—indicating the shaft is not properly supported.
  • Clunking or knocking when engaging drive (or during the transition of power front-to-rear) due to excessive shaft movement or misalignment.
  • Uneven or accelerated wear of the drive shaft flanges, U-joints or bearings because the mis-alignment has increased load on them.
  • Leaking seals around the torque tube or front differential input because the shaft may be oscillating more than designed and stressing the seals.
  • Axial or radial play when inspecting the shaft within the tube—if the bearing bushing is worn, you may see movement of the shaft where it should be tight.
  • Because many owners did not realise the bearings could be replaced separately, some symptoms may have been treated as drive-shaft or flange issues instead of the bearing bushing itself.

Why Replacement Matters:
  • Drivetrain longevity: Replacing a worn bearing bushing prevents further damage to the drive shaft, flanges, U-joints, seals and other components that suffer when alignment is compromised.
  • Noise-Vibration-Harshness improvements: A new bearing support helps reduce driveline vibrations and improves refinement—especially important for long-distance driving or performance use where shaft/torque tube behaviour matters.
  • Safety & reliability: Excessive shaft movement or failure of a support in the drivetrain can lead to catastrophic failure under load—especially in AWD models. Fixing the bearing bushing restores the designed support.
  • Cost-effectiveness: Previously, the only fix for a worn bearing in some models was replacing the complete torque tube (which is expensive). These individual bushings provide a more economical and practical solution.
  • Performance & alignment: Proper support of the drivetrain helps maintain alignment under load, ensures power delivery remains consistent, and avoids unnecessary flex in the system which can degrade handling or drivetrain feel.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

96442101221B
96442101221
964421012X
964421012AX

The product you are viewing cross references to these numbers
Special Offer
901343703PR/6
Product Information
Product Information
Adjustable 24mm Front Anti Roll Bar Kit.
Upgrade your classic Porsche 911’s front suspension with this premium 24 mm adjustable front anti-roll bar kit, designed for 1965-1973 911 models. Replacing the original ~15 mm bar, this kit includes the thicker torsion bar, adjustable levers/drop-links and full mounting hardware, offering significant improvement in chassis control and tuning flexibility. Ideal for restoration, spirited road use or track preparation—this kit gives sharper turn-in, less body lean and the ability to fine-tune roll stiffness to match your tyres and springs.

Fits:
  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

What This Product Does:

  • The front anti-roll bar (sway bar) connects the left and right front suspension arms, limiting body roll by providing a torsional link between the two sides when cornering.
  • By upgrading from the stock ~15 mm diameter bar to 24 mm, you significantly increase torsional stiffness of the bar—thus reducing body lean, improving turn-in and helping the chassis resist roll under load.
  • The adjustable feature means you can change the effective leverage or drop-link mounting position (shorter vs longer arm), thereby tuning the roll stiffness to match springs, tyres, driving style or track vs road use.
  • For a classic 911 with upgraded suspension, wider tyres or lowered ride height, this kit helps ensure the anti-roll bar isn’t the weak link and supports sharper front-end handling.

Symptoms & Signs You Might Need It:
  • The front end of your 911 feels soft or “floaty” in corners, or there’s noticeable body roll—especially compared to performance cars of similar vintage.
  • You’ve upgraded the suspension (lowered springs, stiffer dampers, wider tyres) and the original anti-roll bar seems to “give” too much or let the car lean more than you’d expect.
  • The drop-links or bar mountings show excessive wear, movement or noise (clunks) when turning or going over undulations.
  • You want tuning capability for ride/handling balance—stock fixed bars don’t allow easy adjustment of roll stiffness or corner-balance differences.
  • Visual inspection reveals the stock bar is thin, corroded, the mount bushes collapsed, or the drop-link geometry is showing signs of age.

Why This Upgrade Matters:
  • Improves chassis precision: With a thicker bar and adjustable feature you gain better front-end response, sharper turn-in, and less understeer due to roll-control improvement.
  • Works with the rest of your suspension: If you have upgraded springs/tyres/dampers, this bar ensures those upgrades aren’t compromised by a weak sway bar.
  • Tuning advantage: Because the kit is adjustable, you can dial in the front roll stiffness to match your use (road vs track) or alter the handling balance (understeer/oversteer) more easily.
  • Classic 911 value: For older cars, having performance-capable and maintenance-fresh suspension components adds to usability and resale value.
  • Longevity: Stock bars and mountings from the 1960s/70s may be corroded or tired—replacing with a modern, thicker and adjustable kit improves durability and driving confidence.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

901343703PR
90134370303

The product you are viewing cross references to these numbers
Special Offer
901343703PR/5
Product Information
Product Information
Adjustable 22mm Front Anti Roll Bar Kit.
Upgrade the front roll control of your classic Porsche 911 with this high-performance adjustable 22 mm front anti-roll bar kit. Specifically designed for 1965-73 911 models, this kit replaces the original 15 mm bar with a larger diameter 22 mm unit and includes adjustable drop-links/levers for fine-tuning roll stiffness. Whether you’re restoring a vintage 911, upgrading for spirited driving or prepping for track use, this kit enhances cornering stability, improves front-end responsiveness and allows tuning to match your suspension setup.

Fits:
  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)


What This Product Does:

  • The front anti-roll bar connects the left and right front suspension arms, limiting body roll by transferring load from the outside wheel to the inside wheel during cornering.
  • A larger diameter bar (22 mm vs 15 mm) increases torsional stiffness, reducing body lean, improving turn-in and chassis stability.
  • The “adjustable” aspect adds the ability to change the lever arm or drop-link position, allowing fine-tuning of roll stiffness (e.g., softer for street, stiffer for track) without changing the bar itself.
  • As a result you get sharper front-end response, flatter corners, improved tyre contact and more confidence in dynamic driving.

Symptoms & Signs You Might Need This Upgrade:
  • Excessive body roll or lean in the front end during cornering, or a feeling that the car “leans” more than it used to.
  • The front suspension feels less sharp, turn-in feels delayed or vague — especially if you’ve already upgraded springs, shocks or tyres and the bar is now the limiting factor.
  • If your car has been lowered, fitted with wider tyres, stiffer suspension, or is used for track, the factory bar may no longer provide adequate control.
  • You want to tune or adjust your front roll stiffness — the adjustable kit gives you that capability.
  • Visible signs: a thinner or corroded stock front bar, worn drop-links, excessive movement in the front roll bar mount bushes etc.

Why This Upgrade Matters:
  • By increasing front anti-roll stiffness, you improve the car’s dynamic behaviour: better balance, less front body-roll, sharper front-end response, and improved driver confidence.
  • The adjustable feature gives real world flexibility: you can match stiffness to your tyres, springs, driving style or track/road use rather than being locked into factory spec.
  • For a classic 911 used in sporty driving, cautious track use or performance upgrades, this bar upgrade supports the rest of the suspension system rather than being the weak link.
  • If you leave the stock bar while upgrading other components, you risk handling being compromised — upgrading ensures all parts rise together.
  • Finally, from a restoration perspective, fitting a well-specified upgrade enhances the value and usability of the car.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

901343703PR
90134370303

The product you are viewing cross references to these numbers
Special Offer
901343703PR/4
Product Information
Product Information
Adjustable 19mm Front Anti Roll Bar Kit.
Upgrade the front roll control of your classic Porsche 911 with this adjustable 19 mm front anti-roll bar kit. Designed for 1965-73 911 models, this kit replaces the standard 15 mm bar with a stiffer 19 mm unit, and includes adjustable levers/drop-links to fine-tune roll stiffness. Whether you’re restoring a vintage 911 or upgrading for performance, this kit offers improved cornering stability, sharper front-end response and tuning flexibility.

Fits:
  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)

What This Product Does:

  • An anti-roll bar (sway bar) connects the left and right sides of the front suspension to resist body roll during cornering. It transfers load between the two sides so the outside wheel shares part of the load with the inside one, reducing lean.
  • By increasing the diameter from 15 mm to 19 mm, the bar becomes stiffer, thus reducing body roll further and improving cornering stability and front-end responsiveness.
  • The “adjustable” aspect of the kit allows the driver or technician to change the lever arm length or link pivot point to vary roll stiffness—so you can fine-tune how much the bar contributes vs the springs.
  • This kind of upgrade improves chassis balance, driver feedback, quicker turn-in, and reduced dynamic body lean — especially beneficial on vintage sports cars like the 911 when driven spiritedly or on track.

Symptoms & Signs You Might Need This:
  • You feel excessive body roll at the front during cornering, or the front end feels soft or unstable in lateral transitions.
  • The handling is less sharp than you expect, especially if the suspension has been upgraded (lowered, stiffer springs) and the standard sway bar is now the weak link.
  • You’ve installed wider or stickier tyres, or uprated front suspension components, and want the front anti-roll bar to match the rest of the setup.
  • You want to tune or adjust the balance between understeer/oversteer – using an adjustable bar lets you adapt front roll stiffness.
  • You’re restoring a vintage 911 and want a strong, performance-capable bar with correct style and function.

Why Replacement / Upgrade Matters:
  • A stock sway bar may become inadequate when other suspension elements get upgraded — lowering, heavier wheels, larger tyres all increase demands on the bar. Upgrading to the 19 mm adjustable kit ensures the front links are not the limiting factor.
  • Improved roll stiffness means the car behaves more consistently under load — less lean, more predictable weight transfer, better driver confidence.
  • The adjustable kit gives you tuning flexibility — you can adapt the stiffness for road vs track, or change the balance if you alter tyres, springs, or other suspension components.
  • In a vintage car, a properly specified upgrade also helps maintain or enhance value — strong handling and correct appearance matter.
  • Finally, a performance upgrade like this supports safer driving dynamics when pushing the car harder.



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

901343703PR
90134370303

The product you are viewing cross references to these numbers
Special Offer
91133300906/RACE
Product Information
Product Information
Sports Quick Adjust Rear Spring Plate Set.
Upgrade your Porsche 911’s rear torsion-bar mounting with this Sports Quick-Adjust Rear Spring Plate Set. Ideal for 1987-89 G50 911 and 1989 Turbo models, this set replaces the original fixed plates with indexed, adjustable units featuring performance-grade bushings and high-strength steel plate. The adjustment mechanism allows ride-height and preload tuning without full disassembly, while the upgraded construction gives firmer, more consistent rear-end behaviour under load. Suitable for restoration, lowered or track-use applications, this direct-fit set ensures your rear suspension mounts operate at a higher standard.

Sold As A Set.

Fits:

  • Porsche 911 1987-1989 3.2L G50
  • Porsche 911 1978-1989 3.3L Turbo (930)

Diagram Ref No 16

What This Product Does:
  • On this generation of Porsche 911 with rear torsion-bar suspension, the spring plate is the component that anchors the torsion bar end to the chassis/axle assembly. It controls ride height, torsion bar preload, and helps maintain correct rear-axle geometry (camber, toe, etc.).
  • The adjustable variant adds an indexing mechanism so you can adjust ride-height or preload without full disassembly—useful when lowered, stiffened, or track-modified.
  • “Sports” grade implies upgraded materials (e.g., higher hardness rubber, improved steel plate) to reduce unwanted flex and improve rear-end stability under load.

Symptoms & Signs Of Wear Or When To Upgrade:
  • Rear ride-height is inconsistent or one side sits lower/higher than the other.
  • The rear suspension feels loose, vague or “floating” in corners — especially under hard acceleration/braking.
  • Uneven or excessive rear tyre wear (inner/outer shoulder) indicating geometry is shifting under load.
  • The car has been modified (lowered, stiffened springs, wider tyres) and original non-adjustable plates limit setup or ride-height tuning.
  • Visual inspection: the original plate is rusted, bushings are cracked/collapsed, the indexing mechanism is worn or non-existent.

Why This Upgrade Matters:
  • Improves rear suspension precision: The adjustable plate ensures the torsion bar end is mounted with correct preload and ride-height, which helps maintain alignment under dynamic load, improving handling and tyre life.
  • Facilitates tuning and setup: Especially for lowered or performance cars, the quick-adjust mechanism makes repeated setup/ride-height changes easier.
  • Restores structural integrity: Original plates may have aged, corroded or lost their adjustability; upgrading renews this key mount.
  • Maximises benefit of other upgrades: If you’ve upgraded torsion bars, springs, shocks, ensuring the spring plate is performance-spec ensures nothing in the rear mount is the weak link.



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91133300906
91133300906
91133300906

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90133300309/RACE
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Spring Plate Sports Quick Adjust Rear Set.
Upgrade the rear torsion-bar mounting of your Porsche 911 with this high-performance spring plate set. Designed for 1969-1986 911 models, this pair of indexed, quick-adjust plates replaces the original fixed units with a setup that allows ride-height, preload and corner-balance tuning. The “Sports” version features stiffer mounting bushings and precision manufacturing to reduce deflection and improve rear suspension stability under load.
Sold As A Set.

Fits:
  • Porsche 911 1965-1968 2.0L / 912 SWB (F)
  • Porsche 911 1968-1973 2.2L / 2.4L / 2.7L RS LWB (F)
  • Porsche 911 1974-1977 2.7L / 1976-77 3.0 Carrera
  • Porsche 911 1978-1983 3.0L / SC
  • Porsche 911 1984-1986 3.2L

Diagram Ref No 16

What This Product Does:

  • In torsion-bar rear suspension setups of early Porsches, the spring plate is the mounting point for the torsion bar end. It anchors the bar and defines ride height, preload and geometry of the rear axle.
  • The “quick adjust” / indexing feature allows fast ride height or preload changes without major disassembly — enabling easier suspension setup or tuning.
  • The “Sports” version also implies stiffer bushings or upgraded materials to reduce flex under load, improving rear-end stability and alignment retention during dynamic driving.

Symptoms & Signs You Might Need It:
  • Rear ride height is incorrect or one side sits lower/higher than the other — the original plates may have settled, corroded or lost indexing.
  • Rear suspension feels vague or loose in corners — the torsion-bar mount may be deflecting under load because the plate is worn or the fixings no longer rigid.
  • Uneven tyre wear on the rear, indicative of changing geometry under load.
  • You’ve modified the rear suspension (lowered ride height, stiffer springs, track use) and the original fixed spring plates limit your ability to set proper ride height or preload.
  • The original plates are rusted, corroded or damaged — since many 911s from that era are several decades old, replacement can restore integrity.

Why This Upgrade Matters:
  • The quick-adjust design gives greater flexibility to set the rear suspension correctly (preload, ride height, corner balance) — valuable in restoration, performance or track setups.
  • Upgraded “Sports” bushings/plates reduce unwanted flex and movement, meaning the torsion bar mounting remains more stable, which improves handling precision, alignment retention and tyre life.
  • For a classic 911 which may have been lowered or upgraded, the standard spring plates may no longer be optimal; installing this set helps the entire rear suspension perform as intended or better.
  • It’s also a practical maintenance upgrade: replacing aged plates removes a common wear item and avoids downstream issues caused by degraded rear suspension mounts.



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90133300309
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95133302100/3
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Adjustable Rear Spring Plate Set.
Upgrade your Porsche’s rear torsion-bar suspension with this premium adjustable spring plate set. Supplied as a pair (left & right), these plates are designed for the Porsche 924S (1986-88), 944 (1985/2-94) and 968 (1992-95). The adjustable mounting allows precise ride height and torsion‐bar preload indexing — ideal for restoration, lowered stance, performance upgrades or improved handling. Install provides a firmer rear end, better geometry retention and a more consistent driving feel under load.
Sold As A Pair.

Fits:
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988
  • Porsche 968 3.0L 1992-94
  • Porsche 968 Sport 3.0L 1994-95
  • Porsche 968 CS 3.0L 1993-95
  • Porsche 968 Turbo S 3.0L 1993-94

Diagram Ref No 22

What This Product Does:

  • In a torsion-bar rear suspension design (used on these Porsche models), the spring plate is the mount at which the torsion bar ends and transmits spring load into the chassis/suspension mount. The bushings and plate determine how well the torsion bar is anchored, how consistent ride height is, and how the rear axle reacts under load.
  • An adjustable spring plate adds the ability to fine-tune ride height and torsion bar preload (via indexing) without extensive disassembly. That means you can more easily correct for lowering, increased spring rate, or varying loads.
  • Good spring plates help maintain consistent rear geometry (camber, toe), correct ride height, minimal unwanted movement and crisp behaviour under load (cornering, acceleration, braking).

Symptoms & Signs Of Wear / When You Need To Replace Or Upgrade:
  • Rear ride height is inconsistent, one side sits lower/higher, or you cannot achieve correct ride height despite adjusting torsion bar indexing.
  • Rear suspension feels vague, “loose” in corners, or the car doesn’t handle the rear end with precision — the torsion bar mount may be worn or deflecting.
  • Uneven or accelerated tyre wear on rear tyres (especially inner/outer shoulders) due to shifting geometry under load.
  • When lowering the car or upgrading suspension, you cannot set ride height or preload easily because you are limited by fixed plates. An adjustable version reduces that limitation.
  • Visual signs of degradation: bushings in the spring plate may be cracked, collapsed or show metal-to-metal contact; the plate may show corrosion, wear marks or may be the non-adjustable version but you’d prefer adjustability.

Why Replacement / Upgrade Matters:
  • For road use, upgrading to an adjustable set means your rear suspension is easier to tune, more consistent, and likely to hold its geometry better.
  • If you’ve modified your car (lowered, stiffer springs, wider tyres, track use), the factory non-adjustable plates become a weak link — the upgrade ensures the rest of the suspension upgrades perform as intended.
  • A well-mounted spring plate reduces unwanted movement, improves ride height accuracy, and improves stability and tyre life.
  • Replacing old or worn spring plates renews the rear suspension foundation — this is especially valuable in cars of this era, where wear and age may have compromised original components.
  • From a resale/restoration perspective: an adjustable plate set signals that you’ve invested in chassis tuning and correct mounting hardware.



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95133302100
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477511201/3
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Product Information
Adjustable Rear Spring Plate Set.
Upgrade the rear suspension of your Porsche 924 or 944 with this premium adjustable spring plate set. Sold as a set of two (left & right), these plates replace the standard fixed spring plates on models from the era 1978-85 (924 & 924 Turbo) and 1982-85 (944). Featuring an indexing mechanism, they allow ride height and torsion bar preload adjustments without major disassembly. Whether you’re restoring your car, fitting lowered suspension, or tuning for performance, this set provides improved rear stability, consistent geometry under load and easier setup.
Sold As A Set Of 2.

Fits:
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • Porsche 944 2.5L 8V 1982-87

Diagram Ref No 22

What This Product Does:
  • On torsion-bar rear suspensions, such as those fitted to the 924/944 era Porsches, the spring plate mounts the torsion bar end to the rear axle or body-subframe and helps set ride height and preload of the torsion bar.
  • The “adjustable” version means that the plate includes a mechanism (often splined or stepped indexing) that allows the torsion bar end position (and thus ride height / preload / corner balance) to be changed more easily than the stock non-adjustable plate.
  • It allows for more precise setting of ride height and corner balancing (especially useful for lowered setups, performance handling upgrades or restoration).
  • By maintaining correct torsion bar index and mount condition, the rear suspension geometry remains stable under load, improving handling, ride quality, and tyre wear.

Symptoms & Signs You Might Need This Set:

  • Rear ride height is incorrect, uneven (left vs right) or difficult to adjust — especially after replacing torsion bars or springs.
  • The rear end feels loose or vague in corners, or geometry seems to shift under load – indicating the torsion bar mount may be compromised or mis-indexed.
  • Tyre wear on the rear is uneven or excessive on one side or edge, suggesting rear geometry is not being maintained.
  • If you have lowered the car or changed the torsion bars, but still cannot achieve expected ride height or balance without disassembly — an adjustable plate simplifies the task.
  • On inspection you may find the original plates are corroded, the indexing marks are worn, bolts seized, or the plate has no adjustment capability.

Why Replacement / Upgrade Matters:

  • Improves handling precision: With an adjustable plate you maintain correct ride height and torsion bar preload, which helps the rear suspension respond properly to cornering, braking and load.
  • Facilitates setup and tuning: If you’re modified (lowered, wider tyres, stiffer springs) or restoring, an adjustable plate makes ride height correction much easier and more repeatable.
  • Restores structural integrity: Older spring plates may be worn, corroded or lacking adjustment — replacing them renews the mount and ensures the torsion bar functions optimally.
  • Better tyre wear and alignment retention: Proper indexing and mount condition reduce geometry drift, meaning longer tyre life and better consistent handling.
  • Value and restoration: For classic 924/944 models, having correct suspension hardware can increase confidence and resale value.



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95133302100D
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Product Information
Spring Plate Bush Kit.
Restore the precision and stability of your Porsche’s rear torsion-bar mounting with this Spring Plate Bush Kit. Designed for the rear suspension of the Porsche 924 (1976-88), 944 (1982-91) and 968 (1992-95), this kit replaces the ageing bushings in the torsion-bar spring plate, helping eliminate knocks, restore ride height accuracy, and improve handling response.

Fits:
  • Porsche 924 2.0L 1976-79
  • Porsche 924 2.0L 1980-85
  • Porsche 924 Turbo 2.0L 1979-81
  • Porsche 924 Turbo 2.0L 1982-84
  • Porsche 924 Carrera GT 2.0L 1981
  • Porsche 924 Carrera GTS 2.0L 1982
  • Porsche 924S 2.5L 1986-87
  • Porsche 924S 2.5L 1988
  • Porsche 944 2.5L 8V 1982-87
  • Porsche 944 2.7L 8V 1988-89
  • Porsche 944S 2.5L 16V 1987-88
  • Porsche 944S2 3.0L 16V 1989-91
  • Porsche 944 Turbo 2.5L 8V 1985-88
  • Porsche 944 Turbo 2.5L 8V 1989-91
  • Porsche 944 Turbo S 2.5L 8V 1988
  • Porsche 968 3.0L 1992-94
  • Porsche 968 Sport 3.0L 1994-95
  • Porsche 968 CS 3.0L 1993-95
  • Porsche 968 Turbo S 3.0L 1993-94

What This Product Does:

  • On a torsion-bar rear suspension setup (as used by these Porsche models), the spring plate is the component that anchors the torsion bar end and transmits its twist into the chassis. The bushings in the plate allow rotation under load while isolating vibration and preventing metal-to-metal contact.
  • Over time, the bushings can deform, compress or degrade, which leads to increased movement of the spring plate, changes in ride height or alignment, and poorer handling. The kit replaces this mounting bush to restore proper behavior.
  • By installing the fresh bushings, the rear torsion bar and spring plate regain correct movement, maintain ride height, reduce noise and preserve rear suspension geometry under load (cornering, acceleration, braking).

Symptoms Of Wear Or Failure:
  • Clunking or knocking noises from the rear over bumps or during load transitions, indicating movement in the spring plate or mount.
  • Rear sagging or inconsistent ride height, especially on one side — due to bushing collapse or excessive compliance.
  • Rear end feels vague or loose in corners, or the suspension doesn’t behave as sharply under load.
  • Uneven tyre wear on the rear due to shifting geometry under load.
  • On inspection: the spring plate cover hole is no longer concentric around the bar (the bushings have deformed) or you see metal-to-metal contact between plate and cover.

Why Replacement Matters:
  • Restores suspension geometry integrity: fresh bushings help the torsion bar and spring plate mount maintain correct positioning, ensuring alignment and ride height are as intended.
  • Removes unwanted rear suspension movement: by replacing worn components you regain sharper handling, better driver feedback and improved ride quality.
  • Eliminates noise and harshness: degraded bushings can lead to audible knocks, excessive vibration or an imprecise feel — replacing them brings back refinement.
  • Supports other suspension upgrades: if you’ve upgraded springs, bars or tyres, having new bushings ensures nothing in the rear mount is holding back performance.
  • Prevents secondary wear: when bushings are worn, other rear suspension components carry extra load or misalignment, accelerating their wear; replacing the kit reduces that risk.



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9643430
Product Information
Product Information
Drop Link Sports With 85 Shore Rating, Front.
Upgrade the front anti-roll bar linkages of your Porsche 964 with this high-performance sports drop link set. Designed specifically for the front left and right sides of the 964 C2 / C4 (1990-94) with the M030 sport suspension, these links feature an 85 Shore rated bushing material for minimal compliance and maximum chassis feedback. The result is improved roll resistance, sharper turn-in, and a more connected steering feel. Ideal for restored, tuned or track-prepped 964s, these direct-fit replacements deliver both performance and durability.

Fits:
  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93

Diagram Ref No 7

What This Product Does:

  • The front drop link connects the front anti-roll (sway) bar to the suspension (often via control arm or strut), transmitting roll forces and enabling the bar to limit body roll during cornering.
  • A key role is to ensure that the anti-roll bar engages properly without undue delay or unwanted movement; the drop link is the “lever” that transfers motion.
  • With the “85 Shore” version, the bushings (or joint material) are firmer (i.e., higher durometer) than the standard version — meaning less flex or slack in the link under load, so the anti-roll bar responds more directly and the front end remains flatter in corners.
  • In practical terms this yields sharper front-end handling, reduced body roll, and a more direct “connected” feel through the steering and chassis.

Symptoms & Signs You Might Need This:
  • Clunking or knocking noises from the front suspension when going over bumps or through quick directional changes — suggesting the current drop link or its mount is worn.
  • Excessive body roll or vague front-end behaviour in corners — the anti-roll bar may not be transmitting load effectively due to flex in the link.
  • Uneven handling left vs right — if one drop link side is looser than the other, you might feel asymmetrical behaviour.
  • Soft or “mushy” front-end feel, especially if you’ve upgraded other suspension components (lowered car, stiffer springs) and the links are still standard and allowing unwanted movement.
  • On inspection: visible sleeve or bushing deterioration, play in the link joints, or rubber flexing significantly under load.

Why This Upgrade Matters:
  • The step from standard hardness to 85 Shore gives you a firmer connection in the drop link, meaning the roll bar is engaged more quickly and consistently under load. This is especially beneficial on a car like the 964 with sport suspension or for drivers seeking sharper response.
  • It helps preserve and maximise the benefit of other suspension upgrades (e.g., stiffer springs, upgraded shocks, larger tyres) — because the weak link is removed. If the drop link is still soft or worn, the rest of your upgrades may be compromised.
  • Better roll-control means more predictable handling, less chassis lean in corners, and improved tyre contact patch maintenance — which improves grip, cornering speed and driver confidence.
  • From a maintenance perspective: worn drop links often lead to bushing failure or increased stress on the anti-roll bar and associated mounts. Upgrading proactively can reduce downstream costs and improve longevity.
  • For a vehicle with sport heritage (964 C2 / C4) the upgrade aligns with the model’s dynamic capabilities, bringing front-end behaviour closer to tuned-chassis expectation.



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Special Offer
92833165905/2
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Eccentric Bolt Rear Suspension.
Restore or maintain the alignment-adjust capability of your Porsche 928’s rear suspension with this eccentric bolt. Designed for the 1986–95 928 series (including S2, S4/GT, GTS), this offers direct replacement for the original rear trailing arm / cross-member adjuster. By repositioning the bolt within its eccentric housing, precise adjustment of camber or toe is achievable — helping lock the rear geometry securely and ensuring accurate, stable handling. Sold individually (two recommended per vehicle), this adjuster bolt is a key maintenance item when refreshing the rear suspension or correcting alignment issues.
Sold Each.
x2 Required Per Car.

Fits:
  • Porsche 928S2 4.7L 1984-86
  • Porsche 928S4 5.0L 1987-92
  • Porsche 928GT 5.0L 1989-91
  • Porsche 928GTS 5.4L 1992-95

Diagram Ref No 17

What This Product Does:

  • The eccentric bolt is part of the rear suspension trailing arm / cross-member assembly. It allows for precise adjustment of the rear suspension geometry — typically for camber, toe or longitudinal arm position via the eccentric nature of the bolt.
  • Being “eccentric” means the bolt shaft is offset inside its housing so that when the bolt is rotated or repositioned, the trailing arm or mount moves slightly (i.e., the arm moves in or out by a small amount) to allow alignment adjustment.
  • It helps set and maintain correct alignment (especially toe and camber) of the rear suspension arms relative to the body and chassis — critical for handling, stability and tyre wear on the 928’s rear suspension.
  • When adjusted correctly and properly torqued, the bolt holds the arm or cross-member in its correct location and prevents unwanted movement or geometry shift under load.

Symptoms Of Wear, Mis-Adjustment Or When It Needs Attention:
  • The rear alignment is out of specification or cannot be held — especially rear toe or camber that keeps shifting or adjusting.
  • Unusual tyre wear on the rear tyres — inner or outer edge wear due to geometry changes under load.
  • Rear instability or vague handling — the car may feel less precise, especially in corners or under acceleration/braking, because the arm location isn’t locked down.
  • Loose or knocking noises at the rear suspension — if the eccentric bolt or its housing is worn, movement might occur.
  • During inspection, you find the eccentric bolt is corroded, seized, has stripped threads, or the slot for adjustment is damaged — making accurate adjustment impossible.
  • After a suspension service or arm replacement, the bolt or its seat looks malformed or the previous adjustment marks don’t align — indicates repeat adjustments or wear.

Why Replacement Matters:
  • Ensuring the eccentric bolt is in good condition and correctly torqued is fundamental to rear suspension geometry, which directly influences handling, stability, and tyre life especially in a high-performance car like the 928.
  • A worn or sloppy adjuster can allow the arm to shift under load — reducing precision, creating instability, and wearing tyres faster.
  • In restoration or performance setups (larger tyres, stiffer springs, lowered ride height) the demands on geometry tighten — having a firm, adjustable mount is critical.
  • Replacing the bolt or upgrade stiff fixation means alignment stays correct for longer, adjustments are reliable, and the suspension performs as designed.
  • From a safety viewpoint, correct alignment and arm location help ensure the vehicle behaves predictably in high-load or hard-cornering scenarios.



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96450501800/2
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Reinforcement Bar Tube, Rear.
Ensure the structural integrity of your Porsche 964’s rear bumper assembly with this direct-fit reinforcement bar tube. Designed specifically for 1989-1994 964 models (Carrera 2, Carrera 4, Turbo) Whether you are restoring the vehicle, repairing rear-end damage or updating the body shell structure, this reinforcement tube is a key component in maintaining correct alignment, impact support and overall chassis safety.

Sold Each.
x2 Required Per Car.

Fits:

  • Porsche 964 (911) C2 1989-93
  • Porsche 964 (911) C4 1989-93
  • Porsche 964 (911) RS 3.6L 1991-93
  • Porsche 964 (911) RS 3.8L 1991-93
  • Porsche 964 (911) TURBO 3.3L 1991-93
  • Porsche 964 (911) TURBO 3.6L 1991-93

Diagram Ref No 7

What This Product Does:
  • The reinforcement bar tube sits behind the rear bumper cover and acts as a structural “crash beam” or impact absorber. Its function is to distribute and absorb energy in the event of a rear impact, protecting the bumper cover, rear bodywork and chassis mounting points.
  • It also provides structural support to the rear bumper assembly, helping maintain correct alignment and mount positioning of the bumper. For older cars, correct mount and alignment helps reduce looseness or mis-fit in the rear bumper.
  • By being in good condition (straight, undamaged, properly mounted), it contributes to the integrity of the rear body shell, ensuring panel fitment, bumper alignment, and the proper load path in case of a collision.
  • Essentially: it’s a safety and structure component — not just cosmetic — and is especially important in restorations, body repairs, and when ensuring the car meets structural integrity standards.

Signs Of Wear / Damage & When To Replace:
  • The rear bumper appears mis-aligned, sagging, or sits unevenly relative to body panels — indicating the support tube might be bent or mounting points damaged.
  • Visible damage: the tube is bent, dented, corroded severely, showing cracks or fatigue — this compromises its ability to absorb impact and maintain structure.
  • After a rear-end collision or bumper impact, even if cosmetic damage seems minimal — the reinforcement tube may have absorbed energy or deformed; replacing it restores safety and alignment.
  • Rust or corrosion causing weakening of the tube or its mounting brackets—on cars approaching decades of use (964 is now over 30 years old) this is a valid concern.
  • Increased looseness of the rear bumper or rear body shell components, or rattles/loose mounts behind the bumper — the reinforcement tube might not be holding the structure rigidly.

Why Replacement Matters:
  • Safety and Crash Performance: Even if you never have a significant rear impact, the reinforcement tube is part of the safety system. A deformed or compromised tube will not perform as intended in an accident, risking more damage or injury.
  • Panel Alignment & Fitment: For restoration or high-quality build work, ensuring the rear bumper and body panels mount correctly requires the reinforcement tube to be straight and correct.
  • Resale & Condition: A 964 with proper structural components (including undamaged crash beams) is more desirable; replacing a worn/damaged tube helps maintain value.
  • Repair Foundation: After any rear damage, replacing or straightening this tube provides a solid foundation before mounting bumper shells, diffusers or other external parts.
  • Longevity: With age, even non-crash cars can have tubes that are weakened, corroded or mis-mounted; proactively replacing it ensures the structure remains sound for another several decades.



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