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Porsche > 993 (911) (1994-1998) > 993 (911) TURBO S 1994-97 > Exhausts >

Sport Silencers / Mufflers

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Exhaust muffler / silencer bypass with tail pipes. Porsche 993 Turbo - 99311104554, 99311104555, 99311104654, 99311104655, 99311125150, 99311125153, 99311125154, 99311125254, 99311125253, 99311125250
5
Exhaust muffler / silencer bypass with tail pipes. Porsche 993 Turbo
FSPOR993TMB
Product Information
Product Information
Fabspeed Exhaust muffler / silencer bypass with tail pipes.

Replace your Porsche 993 Twin Turbo's factory mufflers for huge weight savings, and awesome throaty sports car sound with significant power increases. Dyno developed and used by Jeff Zwart and Andial on Jeff's Pikes Peak Hill Climb record setting attempt. Installed and used by 993 Twin Turbo enthusiasts worldwide.

FEATURES:

• Fits all Porsche 993 Turbo vehicles and 993 GT2 street cars worldwide 1995-1998 (993TT, 993TT "S")
• Bolts directly to the stock OEM 993 Twin Turbo catalytic converters
• Sounds like a Chris Craft boat at Cold start-up and then a smoother GT2 sound once warm
• Fabspeed's Muffler Bypass Pipes (in conjunction with our Sport Cat X-Pipe) provide maximum gains of over 28 whp and 26 ft-lbs of torque at 5700 RPM. Peak power surges by 13 whp and 11 ft-lbs to 360 whp and 380 ft-lbs of torque.
• Removes 41 lbs / 18.6 kg from the rear of the vehicle for increased handling
• Loud and aggressive at low RPMs, but more subtle as turbos spool higher
• Incorporates Fabspeed Deluxe Oval Style Tips in your choice of finish to compliment your vehicle's look and style
• This Cat-Back system is emissions legal and does not touch the OEM catalytic converters
• Simple installation in less then one hour and is easily reversible for concours and or trade in time. No affect on vehicle value.
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

Please note: This is a special-order item manufactured to order. In some cases, please allow 4 – 5 weeks for the delivery. Special order items cannot be cancelled from this supplier once your order has been placed.

Please note: It is illegal to fit this product for road use on type-approved vehicles first used on or after 1/3/2001


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Related, superseded, cross reference or alternative numbers for comparison.

FSPOR993TMB
99311104554
99311104555
99311104654
99311104655
99311125150
99311125153
99311125154
99311125254
99311125253
99311125250

The product you are viewing cross references to these numbers
Exhaust Muffler / Silencer Sport System DesignTek for Porsche 993 Turbo / Turbo S - 99311104554, 99311104555, 99311104654, 99311104655 - 55-PS105, 125453
1
Exhaust Muffler / Silencer Sport System DesignTek for Porsche 993 Turbo / Turbo S
3606009303
Product Information
Product Information
Exhaust Muffler / Silencer Sport System

Fits:
Porsche 993 turbo - 1994 to 1998
Porsche 993 turbo S - 1997 to 1998

The DesignTek Twin Turbo Sport Exhaust System is manufactured from 16 gauge, mandrel bent T304 Stainless Steel tubing and it's lightweight saves 35lbs over the original Porsche system.
This system has a super throttle response with lower engine temperatures, a throaty Sportscar sound, and no resonance. The DesignTek Muffers above are the highest performance system available anywhere in the world for the 993 turbo.

How & Why?
DesignTek use 2.5inch (63.5mm) tubing though out the system for the lowest possible backpressure and best flow, more flow than anything on the market!. Fabulous sound with significant power improvement.




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

3606009303
99311104554
99311104555
99311104654
99311104655

The product you are viewing cross references to these numbers
DISPLAYING 1 to 2 (of 2 products)
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About Sport Silencers / Mufflers

Porsche Sport Silencers & Mufflers - Performance Sound & Exhaust Upgrades

Sport Silencers / Mufflers are designed to enhance the sound, performance, and driving character of your Porsche by improving exhaust gas flow and delivering a more engaging exhaust note. Compared to standard exhaust silencers, sports mufflers reduce restriction, sharpen throttle response, and provide a sportier tone that better reflects Porsche’s performance heritage.

Available from Design911, this category includes both genuine Porsche sport exhaust components and high-quality aftermarket performance mufflers, giving owners the choice between factory-engineered authenticity and performance-focused customisation.

What Do Sport Silencers / Mufflers Do?

Sport silencers optimise exhaust flow while enhancing sound quality.

Core Functions:

  • Reduce exhaust backpressure for improved engine breathing.
  • Enhance throttle response and power delivery.
  • Produce a deeper, sportier exhaust note.
  • Improve exhaust efficiency and flow dynamics.
  • Enhance the overall driving experience.

A well-designed sports muffler balances performance gains with refined sound control.

Why Do Standard Exhaust Silencers Fail or Fall Short?

Standard exhaust mufflers are designed primarily for noise reduction, emissions compliance, and longevity. Over time, common issues include:

  • Internal corrosion from condensation and heat cycles.
  • Restrictive baffling limiting exhaust flow.
  • Dull or muted exhaust sound.
  • Internal baffle breakdown causing rattles.
  • Reduced efficiency when paired with performance upgrades.

As these components age, both performance and sound quality can deteriorate.

Why Upgrade to Sport Silencers / Mufflers?

Sport silencers are engineered to improve both performance and auditory feedback.

Upgrade Benefits:

  • Improved exhaust flow and reduced restriction.
  • Enhanced exhaust sound without excessive drone.
  • Increased driving engagement and responsiveness.
  • Available in OEM Porsche or performance aftermarket options.
  • Ideal for road, touring, and spirited driving.

Upgrading delivers a more exciting exhaust character while supporting engine efficiency.

Highlights

  • Porsche sport silencer and muffler upgrades
  • OEM Porsche and premium aftermarket options
  • Improved exhaust sound, flow, and performance
  • Designed for performance-focused driving
  • High-quality materials for durability and reliability       

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