Insert Genuine Porsche part 99134312500

Refresh your 981 Boxster or Cayman's front suspension with this comprehensive kit, including new standard replacement shock absorbers, coil springs, top mounts, dust covers, bump stops, and essential fasteners. 

Suitable for models with standard suspension (PR 029) - not PASM (PR 475 / 477) or fixed sports suspension (PR X73). 


Porsche 981 Boxster 2.7L 2012-16
Porsche 981 Boxster S 3.4L 2012-16

Porsche 981 Cayman 2.7L 2014-16
Porsche 981 Cayman S 3.4L 2014-16

Kit Contents:



Related reference numbers
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FRONTSUSPENSIONKIT981

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Front Shock Absorber Top Mount & Overhaul Kit.
Restore the critical upper mounting point of your front suspension with this comprehensive overhaul kit, designed for Porsche 981 Boxster Spyder front strut-tower applications.

Fits:

• Porsche Boxster 981 Spyder 3.8L 2016

Diagram Ref No 2, 3, 4, 5, 6, 7, 8, 9, 13

What This Product Does:

• The front shock absorber (strut) top mount (sometimes called “strut mount,” “upper mount,” or “mount cap & bearing”) is the part that mounts the top of the front damper/strut to the vehicle’s body (strut tower). It carries spring and damper load, provides a secure connection to the chassis, and often includes a bearing to allow the strut to rotate with steering movement.
• Over time, the top mount’s rubber or elastomer may degrade, the bearing may develop play or noise, the mount plate may shift, washers/nuts may loosen, dust covers may deteriorate. This results in increased noise, worse ride/handling, and possible mis-alignment of the strut.
• This overhaul kit replaces the mount, bearing and all relevant hardware so you restore that top mount area to like new, ensuring proper load path, better durability, reduced noise and proper steering/handling characteristics.
  
  

Signs & When You Should Consider Replacement:

• Clunking, knocking or creaking noises from the front strut-tower area when going over bumps or during steering input — a typical symptom of a worn mount or bearing.
  
• Steering feel or front suspension feel has degraded — loose, vague feel, or mis-alignment under load (cornering) can be caused by mount movement or bearing play.
  
• Ride comfort has worsened — a degraded mount transmits more road vibration or noise into the cabin.
  
• You are replacing the front shocks/struts or doing front suspension work — since the top mount is removed/loosened for such work, renewing the mount and hardware at the same time is highly recommended.
  
• Visual inspection may show a cracked or separated mount rubber, bearing play, rusted or worn nuts/bolts, or installer notes of mount movement when the top is pushed.
  
  

Why Replacement Matters:

• Restores front suspension performance & precision: The top mount is key to how the front suspension loads up and behaves. A degraded mount allows unwanted movement under load, which reduces tyre contact patch consistency, reduces handling precision, and can upset steering feel.
  
• Eliminates noise & improves ride comfort: Many mount failures manifest as clunks, squeaks, or increased vibration. The full kit replacement addresses the entire assembly, not just one failing piece.
  
• Prevents more serious damage: If the mount is loose or the bearing is worn, the load path through the strut stack may shift, leading to premature damper shaft wear or strut tower load concentrations.
  
• Cost-effective timing: Since the top mount requires strut removal or top tower access, doing the full kit while you have that access is efficient and avoids re-doing labour.

Related reference numbers
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SUSPENSIONKIT981SP-FR-1

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FRONT Coil Spring Kit With Sport Suspension (M030 / M031).
Restore the intended front ride height, suspension control and precise chassis behaviour of your Porsche with this OE Match FRONT Coil Spring Kit for Sport Suspension (M030 / M031). 

Kit Contents:
x2 Front Coil Springs (99134353108504/1)
x2 Spring Support Seat (9P1411189/1)
x2 Bellow Cover (9P1412137A/1)
x2 Bump Stop Washer (99134356101)
x2 Bump Stop (99134330105/1)
x2 Top Mount Underlay Pad (9P1412149/1)
x2 Compensation Ring (9P1412269/1)
x2 Mount Plate (99134312500/1)
x2 Upper Mount Bearing (99134350103/1)
x2 Top Nut (PAF00855000)

Fits:

• Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16 (COUPE)
• Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2012-16 (COUPE)

Designed for compatible Porsche applications equipped with the specified M030 / M031 Sport Suspension, this kit provides replacement components for the front spring and suspension assembly. It is ideal for repairing a worn or damaged front suspension or carrying out a more comprehensive chassis refurbishment.

The front coil springs support the weight of the vehicle while allowing the wheels to move vertically over bumps and changing road surfaces. Working together with the shock absorbers and associated mounting components, the springs help determine ride height, suspension travel and the way the chassis responds during braking, cornering and acceleration.

Sport suspension systems depend on the correct spring specification to maintain their intended balance. A sagging, fractured or incorrect spring can change ride height and suspension geometry, potentially affecting steering response, handling, tyre wear and stability.

Replacing deteriorated components with this OE Match Front Coil Spring Kit helps restore the suspension closer to its intended operating condition.

What This Product Does:

• Support the weight of the front of the vehicle.
• Maintain the specified front ride height.
• Provide controlled suspension movement over uneven roads.
• Work together with the front shock absorbers.
• Maintain the intended M030 / M031 Sport Suspension characteristics.
• Support precise steering response.
• Maintain front-end stability.
• Help control body movement during cornering.
• Support stable behaviour under braking.
• Maintain appropriate suspension geometry.
• Keep the tyres in consistent contact with the road.
• Restore suspension performance where original components have deteriorated.
• Provide an OE Match replacement solution for compatible Porsche applications.  

Symptoms Of Wear Or Failure:

• Broken or fractured spring coils.
• Front of the vehicle sitting lower than normal.
• One front corner sitting lower than the other.
• Uneven ride height.
• Excessive suspension sag.
• Reduced ground clearance.
• Knocking or clunking from the front suspension.
• Metallic noises over bumps.
• Noise when steering.
• Spring incorrectly positioned within its seat.
• Increased body movement.
• Reduced steering precision.
• Unsettled handling.
• Suspension bottoming out.
• Vehicle pulling or behaving unpredictably.
• Uneven or accelerated tyre wear.
• Visible spring corrosion.
• Damaged spring coating.
• Cracks or significant deterioration around associated mounting components.  

Why Replacement Matters:

• Coil springs are fundamental load-bearing suspension components.
• They help maintain the designed relationship between the wheels, suspension and vehicle body. A damaged or weakened spring can alter this relationship and affect the way the chassis behaves.
• A completely fractured spring can also move from its intended seating position and potentially interfere with surrounding components.
• Replacing damaged or significantly deteriorated springs helps restore safe and predictable suspension operation.

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

SUSPENSIONKIT991.1.C2.M030-FR

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Front Coil Spring Kit With Standard Suspension (M029).

Restore the correct front ride height, suspension control and original road-going characteristics of your Porsche with this OE Match Front Coil Spring Kit for Standard Suspension (M029).

Kit Contents:
x2 Front Coil Springs (99134353106504/1)
x2 Spring Support Seat (9P1411189/1)
x2 Bellow (99134350901)
x2 Bump Stop Washer (99134356101)
x2 Bump Stop (99134330104)
x2 Top Mount Underlay Pad (9P1412149/1)
x2 Compensation Ring (9P1412269/1)
x2 Mount Plate (99134312500/1)
x2 Mount Bearing (99134350103/1)
x2 Top Nut (PAF00855000)

Fits:

• Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2012-16
• Porsche 991.1 Carrera C2S 3.8L (400/430 Bhp) 2012-16  

Designed for compatible Porsche applications equipped with the specified M029 Standard Suspension, this kit provides replacement components for the front spring assembly and is ideal for repairing worn, damaged or ageing suspension components.

The front coil springs support the weight of the vehicle and allow the suspension to absorb bumps and changes in the road surface. Working together with the shock absorbers and associated mounting components, they help establish the correct ride height while maintaining controlled wheel movement, steering stability and predictable chassis behaviour.

Over time, coil springs can weaken, corrode, sag or fracture. Associated mounting components can also deteriorate through age, mileage and repeated suspension movement. These problems can result in uneven ride height, suspension noise, reduced handling precision and abnormal tyre wear.

Replacing deteriorated components with this OE Match M029 Front Coil Spring Kit helps return the front suspension to its intended operating condition.

What This Product Does:

• Support the weight of the front of the vehicle.
• Maintain the specified front ride height.
• Provide controlled suspension travel.
• Absorb changes in the road surface.
• Work together with the front shock absorbers.
• Maintain the intended M029 Standard Suspension characteristics.
• Support predictable steering response.
• Help maintain front-end stability.
• Control body movement in conjunction with the dampers.
• Support stable braking and cornering behaviour.
• Maintain appropriate suspension geometry.
• Keep the tyres in consistent contact with the road.
• Restore worn or damaged front suspension components.
• Provide an OE Match replacement solution for compatible Porsche applications.  

Symptoms Of Wear Or Failure:

• Broken or fractured spring coils.
• Front of the vehicle sitting lower than normal.
• One front corner sitting lower than the other.
• Uneven ride height.
• Excessive suspension sag.
• Reduced ground clearance.
• Knocking or clunking from the front suspension.
• Metallic noises when travelling over bumps.
• Noise during steering.
• Suspension bottoming out.
• Increased body movement.
• Reduced steering precision.
• Unsettled or inconsistent handling.
• Vehicle pulling to one side.
• Uneven or accelerated tyre wear.
• Visible corrosion on the springs.
• Damaged spring coating.
• Spring incorrectly seated.
• Cracked or deteriorated associated mounting components.  

Why Replacement Matters:

• Coil springs are load-bearing suspension components that play an important role in maintaining the vehicle's ride height and suspension geometry.
• A weakened, sagging or broken spring can alter the relationship between the wheel, suspension and vehicle body.
• A severely fractured spring can also move out of its intended seating position and potentially interfere with surrounding components.
• Replacing defective springs helps restore safe and predictable suspension behaviour.

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

SUSPENSIONKIT991.1.C2.M029-FR

The product you are viewing cross references to these numbers