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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://www.design91.uk/images/schemaLogo.png https://www.design91.uk/images/schemaLogo.png +443456003478 https://www.design91.uk Facebook Instagram

All Silencers / Mufflers

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DISPLAYING 1 to 6 (of 6 products)
CARP68NGTSS01_KIT
Product Information
Product Information
Sport exhaust system manifold-back with - catalytic bypass - Center silencer bypass Porsche 968

cargraphic

Fits for:
Porsche 968
Porsche 968 CS

Product description:
CARGRAPHIC N-GT Sport Exhaust System Manifold Back SS304L - Homologated for FIA N-GT class

Consisting of:
• CARGRAPHIC Downpipe with catalytic converter replacement pipe (empty catalytic housing), exhaust pipe / diameter: 2x Ø48mm > 1x Ø63,50mm
• CARGRAPHIC Center silencer replacement pipe, exhaust pipe / diameter: 1x Ø63,50mm > 2x Ø48mm
• CARGRAPHIC Sport rear silencer, exhaust pipe / diameter: 2x Ø48mm > 1x Ø63,50mm
• CARGRAPHIC Sport tailpipe Ø115x85mm oval, slash cut, rolled-in - Mirror polished

NO DRONE OR RESONATION even in combination with other CARGRAPHIC exhaust components fitted.

Features:

• Over 9kg weight saving compared to factory exhaust system
• Specially designed and homologated for N-GT class reglement
• All parts are interchangeable with factory / OE parts
• Absorptive silencer design with CNC mandrel-bent pipework
• Fully made from SS-304L lightweight stainless steel
• High performance components, dyno tested
• Reinforced laser-cut brackets
• Reduced backpressure due to freer flowing
• Reduced operating temperature
• Maximized performance
• Improved throttle response, freer revving
• Improved enhanced acoustics with no drone, resonation or vibration
• Model specific tuned sound still in keeping with the Marque
• Weight reduction

PERFORMANCE - Made in Germany

up to 11KW (15PS) more power and 15Nm additional torque
with optional CARGRAPHIC Motronic / DEM upgrade up to 26KW (35PS) more power and 35Nm additional torque!

Fitting Service:
Benefit from our fitting service in our modern and hightech workshop. A team of qualified, experienced technicians fulfill all your needs with due skill, care and diligence.

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.

CARP68NGTSS01_KIT
94411104111
94411108112
94411199111

The product you are viewing cross references to these numbers
CARP68NGTS01_KIT
Product Information
Product Information
Sport exhaust system manifold-back with - catalytic bypass for Porsche 968

cargraphic

Fits for:
Porsche 968
Porsche 968 CS

Product description:
CARGRAPHIC N-GT Sport Exhaust System Manifold Back SS304L - Homologated for FIA N-GT class

Consisting of:
• CARGRAPHIC Downpipe with catalytic converter replacement pipe (empty catalytic housing), exhaust pipe / diameter: 2x Ø48mm > 1x Ø63,50mm
• CARGRAPHIC Sport center silencer, exhaust pipe / diameter: 1x Ø63,50mm > 2x Ø48mm
• CARGRAPHIC Sport rear silencer, exhaust pipe / diameter: 2x Ø48mm > 1x Ø63,50mm
• CARGRAPHIC Sport tailpipe Ø115x85mm oval, slash cut, rolled-in - Mirror polished

NO DRONE OR RESONATION even in combination with other CARGRAPHIC exhaust components fitted.

Features:
• Over 9kg weight saving compared to factory exhaust system
• Specially designed and homologated for N-GT class reglement
• All parts are interchangeable with factory / OE parts
• Absorptive silencer design with CNC mandrel-bent pipework
• Fully made from SS-304L lightweight stainless steel
• High performance components, dyno tested
• Reinforced laser-cut brackets
• Reduced backpressure due to freer flowing
• Reduced operating temperature
• Maximized performance
• Improved throttle response, freer revving
• Improved enhanced acoustics with no drone, resonation or vibration
• Model specific tuned sound still in keeping with the Marque<
• Weight reduction

PERFORMANCE - Made in Germany

up to 11KW (15PS) more power and 15Nm additional torque
with optional CARGRAPHIC Motronic / DEM upgrade up to 26KW (35PS) more power and 35Nm additional torque!

Fitting Service:
Benefit from our fitting service in our modern and hightech workshop. A team of qualified, experienced technicians fulfill all your needs with due skill, care and diligence.

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.
CARP68NGT1KATER
Product Information
Product Information
Sport downpipe manifold-back with catalytic converter replacement pipe - Porsche 968 3.0L CARGRAPHIC N-GT

cargraphic

Fits for:
Porsche 968 3.0L
Porsche 968 CS 3.0L

Product description:
CARGRAPHIC N-GT Sport Downpipe Manifold Back SS304L - Homologated for N-GT class

Consisting of:
CARGRAPHIC Downpipe with catalytic converter replacement (BYPASS) with 2x48mm > 63,50mm pipework

NO DRONE OR RESONATION even in combination with other CARGRAPHIC exhaust components fitted.

Features:

• Specially designed and homologated for N-GT class reglement
• All parts are interchangeable with factory / OE parts
• Fully made from SS304L lightweight stainless steel
• High performance components, dyno tested
• Reinforced laser-cut brackets
• Reduced backpressure due to freer flowing
• Reduced operating temperature
• Maximized performance
• Improved throttle response, freer revving
• Improved enhanced acoustics with no drone, resonation or vibration
• Model specific tuned sound still in keeping with the Marque
• Weight reduction

PERFORMANCE - Made in Germany

up to 11KW (15PS) more power and 15Nm additional torque

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.

CARP68NGT1KATER
94411108112
94411199111

The product you are viewing cross references to these numbers
CARP68NGT2
Product Information
Product Information
Sport Pre silencer for - Porsche 968 M44-43 CARGRAPHIC N-GT

cargraphic

Fits for:
Porsche 968 M44-43

Product description:CARGRAPHIC N-GT Sport Pre Silencer SS304L - Homologated for N-GT class

Consisting of:
CARGRAPHIC Pre silencer with 63,50mm > 2x48mm pipework with high temperature flex

NO DRONE OR RESONATION even in combination with other CARGRAPHIC exhaust components fitted

Features:

• Specially designed and homologated for N-GT class reglement
• All parts are interchangeable with factory / OE parts
• Absorptive silencer design with CNC mandrel-bent pipework
• Fully made from T-304L lightweight stainless steel
• High performance components, dyno tested
• Reinforced laser-cut brackets
• Reduced backpressure due to freer flowing
• Reduced operating temperature
• Maximized performance
• Improved throttle response, freer revving
• Improved enhanced acoustics with no drone, resonation or vibration
• Model specific tuned sound still in keeping with the Marque
• Weight reduction

PERFORMANCE - Made in Germany

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

CARP68NGT2
94411104111
94411104901

The product you are viewing cross references to these numbers
CARP68NGT2ER
Product Information
Product Information
Sport Pre silencer replacement for - Porsche 968 M44-43 CARGRAPHIC N-GT

cargraphic

Fits for:
Porsche 968 M44-43

Product description:
CARGRAPHIC N-GT Sport Pre Silencer Replacement Pipe SS304L - Homologated for N-GT class

Consisting of:
CARGRAPHIC Pre silencer replacement pipe with 63,50mm > 2x48mm pipework with high temperature flex

NO DRONE OR RESONATION even in combination with other CARGRAPHIC exhaust components fitted.

Features:

• Specially designed and homologated for N-GT class reglement
• All parts are interchangeable with factory / OE parts• CNC mandrel-bent pipework
• Fully made from T-304L lightweight stainless steel• High performance components, dyno tested
• Reinforced laser-cut brackets
• Reduced backpressure due to freer flowing
• Reduced operating temperature
• Maximized performance
• Improved throttle response, freer revving
• Improved enhanced acoustics with no drone, resonation or vibration
• Model specific tuned sound still in keeping with the Marque
• Weight reduction

PERFORMANCE - Made in Germany

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

CARP68NGT2ER
94411104111

The product you are viewing cross references to these numbers
CARP68NGT3
Product Information
Product Information
Sport rear silencer for - Porsche 968 M44-43 CARGRAPHIC N-GT

cargraphic

Fits for:
Porsche 968 M44-43

Product description:
CARGRAPHIC N-GT Sport Rear Silencer SS304L - Homologated for N-GT class

Consisting of:
CARGRAPHIC Rear silencer with 2x48mm > 63,50mm pipework

NO DRONE OR RESONATION even in combination with other CARGRAPHIC exhaust components fitted.

Features:

• Specially designed and homologated for N-GT class reglement
• All parts are interchangeable with factory / OE parts
• Absorptive silencer design with CNC mandrel-bent pipework
• Fully made from T-304L lightweight stainless steel
• High performance components, dyno tested
• Reinforced laser-cut brackets
• Reduced backpressure due to freer flowing
• Reduced operating temperature
• Maximized performance
• Improved throttle response, freer revving
• Improved enhanced acoustics with no drone, resonation or vibration
• Model specific tuned sound still in keeping with the Marque
• Weight reduction

PERFORMANCE - Made in Germany

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

CARP68NGT3
94411104111
94411104901

The product you are viewing cross references to these numbers
DISPLAYING 1 to 6 (of 6 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.

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