Please wait… 
Please wait while we process your order,
do not press the back button… 
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://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

All Silencers / Mufflers

Filter by brand
DISPLAYING 1 to 9 (of 9 products)
EXHAUSTKIT75
Product Information
Product Information
Exhaust system made out of stainless steel.

danskmotorsport

Components:

- 100 Cell sport catalyst converters
- Sport silencers
- Tail pipe set

Fits:
Porsche 993 1995-98 (not Turbo)



Fitting kit not included in price and available separately.

NOTE: In the United Kingdom, sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001. They are not MOT compliant and cannot be used on public roads. These components are intended solely for race and track use.

For vehicles manufactured before 1st March 2001, a non-type approved sports catalytic converter may be fitted, provided it offers comparable performance to the original and the vehicle continues to meet the applicable emissions standards for its age.

The vehicle must still pass an MOT test. If you are located outside the UK, please check your local laws and regulations to ensure compliance.

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Related, superseded, cross reference or alternative numbers for comparison.

EXHAUSTKIT75
99322093300S
93.300S
99322093903S
93.903S
993PO93260S
PO93260S

The product you are viewing cross references to these numbers
FSPOR993SCUP
Product Information
Product Information
Fabspeed Exhaust Muffler / Silencer Bypass. Race


fabspeed

Loud and aggressive performance exhaust system recommended for track use only; replaces the restrictive factory mufflers with a free-flowing resonated design.

Fabspeed's Porsche 993 Supercup Exhaust System utilizes track-specific tuning to bring out the most aggressive sound and performance for your Carrera. Precision-made from T304L stainless steel, this exhaust will save 11 lbs. while adding 15 horsepower. Our engineers designed this exhaust to deliver its power at higher RPM ranges for ideal performance during track and motorsport events.

This exhaust installs easily without the need for adapters, cutting, or welding. Simply remove the old exhaust and bolt on this new component using the original ball-joint clamps. Included turndowns can be easily installed and removed in order to lower the exhaust volume when desired. As always, this component is backed by Fabspeed's lifetime limited warranty.

FEATURES:
Fits: all Porsche 993 Carrera vehicles (1994-1998)
• Improves exhaust flow and sports car sound
• Adds 15 whp greatly improving throttle response
• Saves 11 bs from rear of car
• Optimized for use at high-RPM during track and motorsport events
• Complete T304L stainless steel construction; 14-16ga CNC mandrel-bent 2.25" tubing
• Direct replacement for the factory mufflers
• Includes removable turndowns that are "easy on & easy off" for lowering the exhaust volume when desired
• All Fabspeed performance products are backed by the Fabspeed Lifetime Limited Warranty
• DISCLAIMER: The original factory ball-joint clamps must be re-used when installing Fabspeed exhaust products on all 993 Carrera vehicles.

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.

FSPOR993SCUP
99311104510
99311104514
99311104511
99311104611
99311104614
99311104610
99311104613

The product you are viewing cross references to these numbers
99322093300SOE
Product Information
Product Information
Rear sport exhaust set. OE style with TÜV/EEC approval
Stainless Steel, polished. SET OF 2.

dansk   tuv

Fits:
Porsche 993 C2 / C4 1994-98

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

99322093300SOE
93.300SOE
93300SOE
1620608110
99311199300
99311104511
99311104513
99311104510
99311104514
99311104611
99311104614
99311104610
99311104613

The product you are viewing cross references to these numbers
3606009301
Product Information
Product Information
Exhaust Muffler / Silencer Rear boxes Sports Sound (slightly louder over stock exhaust) Set of 2 Left & right 

designtek

DesignTek sport exhaust rear boxes are design to give a better throttle response, and also allowing the engine to breather. DesignTek exhaust sounds slightly deeper than the original Porsche standard exhaust. All DesignTek Exhaust Systems are manufactured from 14 - 16 gauge extra heavy duty T304 stainless steel, which eliminates the splitting, cracking and annoying resonance.

Fits:
Porsche 993 1994-97 (not Turbo & GT2)

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

3606009301
55-PS104
125454
99311104614
99311104613
9931110461
99311104513
99311104514
9931110451

The product you are viewing cross references to these numbers
FSPOR993RSRWH
Product Information
Product Information
Fabspeed Header Muffler Kit WITH Heat Exchange

fabspeed

Fits : all Porsche 993 Carrera vehicles 1994-1998 - 3.6L / 3.8L and engines

Fabspeed's RSR Header Muffler Kit is a full exhaust system developed for track use provides an aggressive exhaust note while adding horsepower, torque, and throttle response; available as single or dual outlet and with or without heat exchange. Works great on street cars too. This Header/Muffler kit is built from the ground up to optimize performance for the Porsche 993 Carrera. Beyond just improving horsepower, torque, and throttle response, this package will also reduce the overall weight of your car by 43 pounds, which improves handling and acceleration.

SOUND:

This kit is designed specifically for use on the track, but works well for street drivers who want an aggressive and track-inspired exhaust note.

POWER:

We developed every inch of it to bring out the aggressive performance that the Carrera is capable of. On our dyno we saw gains of 29whp and 25ft/lbs of tq.

FEATURES:

• Loud and aggressive cup car sound
• 1.75" / 45mm Header tubes, 26" long
• This system can be ordered with single or double outlets
• Maintain your factory in-cabin heat with the optional heat exchange on the headers
• Saves 43lbs from the rear of the vehicle with heat exchange option, and saves 47lbs without heat exchange option
• Constructed from mandrel bent T304L stainless steel
• Simple DIY bolt-on installation, no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

NOTE:

This package can be purchased with a heat exchange on the headers that will help maintain the factory in-cabin heat. Without the exchange system, you'll save an additional 4 lbs, for a total of 47 pounds of weight reduction.

PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.

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.


NOTE: In the United Kingdom, sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001. They are not MOT compliant and cannot be used on public roads. These components are intended solely for race and track use.

For vehicles manufactured before 1st March 2001, a non-type approved sports catalytic converter may be fitted, provided it offers comparable performance to the original and the vehicle continues to meet the applicable emissions standards for its age.

The vehicle must still pass an MOT test. If you are located outside the UK, please check your local laws and regulations to ensure compliance.



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

FSPOR993RSRWH
99311104510
99311104514
99311104511
99311104611
99311104614
99311104610
99311104613
99311321316
99311321338
99311321343
99311321344
99321103905
99321103907
99321103910
99321103911
99321104005
99321104007
99321104010
99321104011

The product you are viewing cross references to these numbers
FSPOR993RSRWOH
Product Information
Product Information
Fabspeed Header Muffler Kit WITHOUT Heat Exchange.

fabspeed

Fits: all Porsche 993 Carrera vehicles 1994-1998 - 3.6 liter / 3.8 liter and engines

Fabspeed's RSR Header Muffler Kit is a full exhaust system developed for track use provides an aggressive exhaust note while adding horsepower, torque, and throttle response; available as single or dual outlet and with or without heat exchange. Works great on street cars too. This Header/Muffler kit is built from the ground up to optimize performance for the Porsche 993 Carrera. Beyond just improving horsepower, torque, and throttle response, this package will also reduce the overall weight of your car by 43 pounds, which improves handling and acceleration.

SOUND:

This kit is designed specifically for use on the track, but works well for street drivers who want an aggressive and track-inspired exhaust note.

POWER:

We developed every inch of it to bring out the aggressive performance that the Carrera is capable of. On our dyno we saw gains of 29whp and 25ft/lbs of tq.

FEATURES:

• Loud and aggressive cup car sound
• 1.75" / 45mm Header tubes, 26" long
• This system can be ordered with single or double outlets
• Maintain your factory in-cabin heat with the optional heat exchange on the headers
• Saves 43lbs from the rear of the vehicle with heat exchange option, and saves 47lbs without heat exchange option
• Constructed from mandrel bent T304L stainless steel
• Simple DIY bolt-on installation, no cutting or welding required
• All Fabspeed performance products are backed by the Fabspeed Lifetime Warranty

NOTE:

This package can be purchased with a heat exchange on the headers that will help maintain the factory in-cabin heat. Without the exchange system, you'll save an additional 4 lbs, for a total of 47 pounds of weight reduction.

PURCHASE DISCLAIMER: Fabspeed Motorsport does not condone the use of emission defeat devices for any vehicles used on public streets or roadways. Fabspeed Motorsport will not tamper, remove, disable, or bypass emissions equipment on a motor vehicle in accordance with 40 CFR Section 86.1854.12(a)(3), Clean Air Act 40 CFR 1068.101(b). This includes software, known as tunes, that reprogram a motor vehicles electronic control module to alter engine performance and enable the removal of filters, catalysts, and other critical emissions controls.


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.

NOTE: In the United Kingdom, sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001. They are not MOT compliant and cannot be used on public roads. These components are intended solely for race and track use.

For vehicles manufactured before 1st March 2001, a non-type approved sports catalytic converter may be fitted, provided it offers comparable performance to the original and the vehicle continues to meet the applicable emissions standards for its age. The vehicle must still pass an MOT test.

If you are located outside the UK, please check your local laws and regulations to ensure compliance.

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

FSPOR993RSRWOH
99311104510
99311104514
99311104511
99311104611
99311104614
99311104610
99311104613
99311321316
99311321338
99311321343
99311321344
99321103905
99321103907
99321103910
99321103911
99321104005
99321104007
99321104010
99321104011

The product you are viewing cross references to these numbers
99322093300SEXP
Product Information
Product Information

Exhaust muffler / silencer sports Very Loud Deep for Porsche 993
SET OF 2

Fits:
Porsche 993 C2, C4, C2S, C4S 1994-1998

Replaces rear silencers. Fabulous sound with significant power improvement. Represents approximately a 10-12 bhp increase. Very Loud Deep.
Without TÜV/EEC approval.

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

99322093300SEXP
93.300SEXP
93300SEXP
1620601810
99311199300
99311104611
99311104614
99311104610
99311104613
99311104511
99311104510
99311104514

The product you are viewing cross references to these numbers
Special Order item
99311104
Product Information
Product Information
Exhaust Muffler / Silencer Sports. Porsche 993 Carrera

Made by porsche

Fits:
Porsche 993 CARRERA (NOT RS OR TURBO)

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

99311104
99311104614
99311104513

The product you are viewing cross references to these numbers
99322093300S
Product Information
Product Information
Replaces rear silencers. Fabulous sound with significant power improvement. Represents approximately a 10-12 bhp increase. - Sports Deep Sound 

with TÜV/EEC approval Click here

SET OF 2

danskmotorsport   tuv

Fits:
Porsche 993 C2, C4, C2S, C4S 1994-1998



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

99322093300S
93.300S
93300S
1620601710
99311199300
99311104611
99311104614
99311104610
99311104613
99311104511
99311104510
99311104514

The product you are viewing cross references to these numbers
DISPLAYING 1 to 9 (of 9 products)
Also found on these pages
About All Silencers / Mufflers

Standard Exhaust Systems – Engineered for Performance, Sound & Longevity

A standard exhaust system is essential for your Porsche’s performance, efficiency, and sound. It controls the flow of exhaust gases from the engine, reduces emissions, manages noise levels, and ensures balanced back pressure for optimal power delivery.

At Design911, we supply standard exhaust systems built from high-grade stainless steel and corrosion-resistant materials. Designed to meet or exceed manufacturer performance standards, these systems deliver the perfect blend of durability, refinement, and performance — ideal for both daily driving and restoration projects.

Each exhaust system is developed to ensure precise fitment, excellent gas flow, and an authentic Porsche exhaust note that retains the car’s original character.

What Do Standard Exhaust Systems Do?

A standard exhaust system performs several vital roles that keep your Porsche running efficiently, cleanly, and safely.

Core Functions:

  • Directs exhaust gases safely away from the engine.
  • Reduces emissions through catalytic converters and silencers.
  • Controls back pressure for balanced performance and fuel efficiency.
  • Minimises engine noise while preserving Porsche’s signature tone.
  • Aids temperature regulation and exhaust scavenging.

A properly maintained exhaust system ensures smooth performance, reduced fuel consumption, and compliance with emissions regulations.

Why Do Exhaust Systems Fail?

Exhaust systems are constantly exposed to heat, moisture, and corrosive gases — all of which take a toll over time.

Common Causes of Failure Include:

  • Corrosion and rust from road salt, condensation, and moisture.
  • Cracked welds or pipes due to vibration and thermal cycling.
  • Internal baffle damage causing rattling or loss of silencing effect.
  • Blocked or leaking joints leading to reduced performance and increased noise.
  • Burnt-out catalytic converters or mufflers reducing efficiency.

Signs of exhaust failure include loud noises, rattling, exhaust odours, or reduced engine performance — all clear indicators that replacement is required.

Why Replace Standard Exhaust Components?

Replacing a worn or damaged exhaust system restores performance, comfort, and efficiency while maintaining your Porsche’s distinctive exhaust tone.

Key Benefits:

  • Restores proper exhaust flow and back pressure.
  • Improves fuel efficiency and power output.
  • Reduces noise and vibration.
  • Ensures emissions compliance and MOT readiness.
  • Built from corrosion-resistant stainless steel for longevity.
  • Direct-fit compatibility for classic and modern Porsche models.

Upgrading to a high-quality standard exhaust preserves the car’s original performance characteristics while ensuring long-lasting reliability.

Highlights:

  • Precision-engineered exhaust systems for Porsche vehicles.
  • Optimised gas flow for power, torque, and efficiency.
  • Durable stainless-steel construction for corrosion resistance.
  • Designed for authentic tone and perfect fitment.
  • Suitable for classic restoration and modern maintenance.
  • Reliable, quiet, and performance-balanced solutions.

You may also like
Popular Models