All Silencers / Mufflers

The Fabspeed Muffler Bypass Exhaust System is a high-performance exhaust upgrade designed for the 2000–2005 Porsche 996 Turbo.

Fits:

• Porsche 996 TURBO 2000-05

Developed for drivers looking for maximum exhaust character and reduced restriction, the system replaces the restrictive factory muffler arrangement with a much freer-flowing bypass design. The result is a significantly louder, more aggressive exhaust note together with improved exhaust flow, sharper throttle response and reduced rear-end weight.

Fabspeed offers the system in two configurations. The Race configuration uses catalyst-bypass pipes for maximum flow. Fabspeed notes that emissions-related configurations may be restricted to closed-course or off-road use depending on local legislation, so applicable regulations should be checked before installation.

Manufactured from 14–16 gauge CNC mandrel-bent T304L stainless steel, the system is designed to provide excellent heat resistance, corrosion resistance and long-term durability. Fabspeed also states that the system removes approximately 45 lb (20 kg) from the rear of the vehicle compared with the factory arrangement.

What This Product Does:
The exhaust system carries combustion gases away from the turbochargers and engine. Factory mufflers are designed to control exhaust volume, but they also introduce resistance into the exhaust path.

The Fabspeed Muffler Bypass system removes much of this restriction by providing a more direct exhaust route.

Its key functions and benefits include:

• Reducing exhaust backpressure and restriction
• Improving exhaust gas flow
• Helping the turbocharged engine breathe more freely
• Improving throttle response
• Supporting increased horsepower and torque
• Producing a much louder and more aggressive exhaust note
• Reducing weight at the rear of the vehicle
• Replacing ageing factory exhaust components with stainless-steel alternatives

Fabspeed publishes gains of approximately 37 hp and 42 lb-ft of torque for this system, although actual results can vary depending on vehicle condition, modifications and configuration.

This is one of Fabspeed's more aggressive exhaust options and is particularly suited to owners prioritising performance and exhaust sound rather than factory-level refinement.

Symptoms Of Wear Or Failure:
Porsche 996 Turbo models are now more than two decades old, meaning original exhaust components may have experienced thousands of heat cycles along with moisture, road salt and vibration.

Common signs of exhaust deterioration include:

• Rust or corrosion on exhaust pipes or silencers
• Cracks around welds and joints
• Exhaust leaks
• Blowing, ticking or hissing noises
• Rattling from deteriorated muffler internals
• Loose exhaust components or mounting points
• Increased exhaust noise in unexpected areas
• Exhaust fumes around the rear of the vehicle
• Soot deposits around leaking joints
• Reduced engine performance
• Slower or less responsive turbo performance
• Increased exhaust restriction
• Check Engine Light associated with catalyst efficiency
• Metallic rattling from damaged catalytic converter material
• Sulphur-like or unusual exhaust smells
• Visible damage to exhaust pipework

A deteriorated or internally damaged catalytic converter can also restrict exhaust flow. This may contribute to reduced performance and increased exhaust temperatures.

Why Replacement / Upgrading Matters:

• A leaking, corroded or restricted exhaust system can affect both performance and reliability.
• On a turbocharged engine such as the Porsche 996 Turbo, efficient exhaust flow downstream of the turbochargers is particularly important. Excessive restriction can work against efficient gas evacuation and may negatively affect throttle response and overall performance.
• Exhaust leaks can also produce unwanted noise and allow hot exhaust gases to escape close to surrounding components. Severe corrosion can weaken pipework, joints and mounting points until components become loose or fail completely.
• A damaged or partially blocked catalytic converter can create additional exhaust restriction and potentially increase thermal stress within the exhaust system.
• Replacing deteriorated factory components with the Fabspeed Muffler Bypass system restores a secure exhaust path while substantially reducing restriction and weight. For owners seeking a performance-focused setup, it also provides a much more pronounced turbocharged exhaust sound.

Running from the turbocharger outlets through to the exhaust tips, the system replaces restrictive sections of the original exhaust with a freer-flowing 70mm X-pipe configuration. The design is intended to improve exhaust gas flow, reduce restriction and give the 996 Turbo a considerably more aggressive exhaust note.

The Race application configuration using catalyst-bypass pipes with oxygen-sensor locations matching the factory arrangement; this version is intended for off-road or track use only.

Constructed from 14–16 gauge CNC mandrel-bent T304L stainless steel, the system is designed for durability, corrosion resistance and smooth internal exhaust flow. Fabspeed states gains of approximately 32 wheel horsepower and 37 ft-lb of torque, depending on vehicle condition and configuration.

What This Product Does:
The exhaust system carries combustion gases away from the turbochargers and engine while controlling exhaust flow, noise and, where catalytic converters are fitted, emissions.

On a turbocharged engine, excessive exhaust restriction after the turbochargers can work against efficient gas evacuation. The Fabspeed 70mm system uses larger, smoother-flowing pipework and an X-pipe layout to reduce restriction and improve exhaust flow.

Potential benefits include:

• Improved exhaust gas flow
• Reduced post-turbo exhaust restriction
• Increased horsepower and torque
• Sharper engine response
• A deeper and more aggressive exhaust sound
• Reduced weight compared with the factory system
• Improved durability through stainless-steel construction

The Supersport system is positioned between Fabspeed's quieter Maxflo system and its louder Muffler Bypass system, providing a more aggressive exhaust character without being its most extreme exhaust option.

Symptoms Of Wear Or Failure:
The original exhaust system on a 996 Turbo is now potentially more than two decades old, and heat cycles, condensation, road salt and vibration can gradually deteriorate exhaust components.

Common symptoms that may indicate exhaust deterioration include:

• Rust or corrosion on exhaust pipes and silencers
• Cracks around welds, joints or mounting points
• Exhaust gas leaks
• A blowing, ticking or hissing sound
• Increased or unusual exhaust noise
• Rattling from loose internal components or heat shields
• Exhaust fumes around the rear of the vehicle
• Reduced engine performance or throttle response
• Increased turbo lag where exhaust restriction becomes excessive
• Visible damage or deformation to exhaust pipework
• Failed or deteriorating catalytic converters
• Check Engine Light associated with catalyst efficiency or oxygen-sensor faults
• Sulphur or unusual exhaust smells
• Restricted exhaust flow caused by a damaged or partially blocked catalytic converter

Catalytic converters can deteriorate internally with age and repeated heat cycling. A damaged catalyst substrate may break apart, rattle or restrict exhaust flow, potentially reducing performance.

Why Replacement / Upgrading Matters:

• A damaged or heavily deteriorated exhaust system can affect more than sound and appearance. Exhaust leaks can allow gases to escape before reaching the intended outlets, while damaged or restricted catalytic converters can interfere with exhaust flow and reduce engine performance.
• This is particularly important on a turbocharged Porsche 996, where efficient exhaust flow downstream of the turbochargers plays an important role in overall engine and turbocharger performance.
• Replacing an ageing or restrictive exhaust system can help restore secure, leak-free exhaust operation while improving flow and durability. For owners seeking a performance upgrade, the Fabspeed Supersport system also provides larger-diameter pipework and a freer-flowing X-pipe configuration designed to take greater advantage of the 996 Turbo's performance potential.
• The stainless-steel construction also offers improved resistance to corrosion compared with an ageing original exhaust, making the system suitable both as a replacement for deteriorated components and as a performance-oriented upgrade.

Key Features:

• Fits Porsche 996 Turbo and Turbo S models from 2000–2005
• 70mm Supersport X-pipe exhaust design
• Runs from the turbo outlets to the exhaust tips
• Race version available with catalyst-bypass pipes for off-road/track use 
• Claimed increase of approximately 32 whp and 37 ft-lb of torque
• 14–16 gauge CNC mandrel-bent T304L stainless-steel construction
• Designed to improve exhaust flow and sound
• Direct bolt-on installation
• More aggressive sound than Fabspeed's Maxflo system

Running from the turbocharger outlets through to the exhaust tips, the system replaces restrictive sections of the original exhaust with a freer-flowing 70mm X-pipe configuration. The design is intended to improve exhaust gas flow, reduce restriction and give the 996 Turbo a considerably more aggressive exhaust note.

The Street application incorporates 200-cell HJS Sport catalytic converters, combining increased exhaust flow with catalytic emissions control.

Constructed from 14–16 gauge CNC mandrel-bent T304L stainless steel, the system is designed for durability, corrosion resistance and smooth internal exhaust flow. Fabspeed states gains of approximately 32 wheel horsepower and 37 ft-lb of torque, depending on vehicle condition and configuration.

What This Product Does:
The exhaust system carries combustion gases away from the turbochargers and engine while controlling exhaust flow, noise and, where catalytic converters are fitted, emissions.

On a turbocharged engine, excessive exhaust restriction after the turbochargers can work against efficient gas evacuation. The Fabspeed 70mm system uses larger, smoother-flowing pipework and an X-pipe layout to reduce restriction and improve exhaust flow.

Potential benefits include:

• Improved exhaust gas flow
• Reduced post-turbo exhaust restriction
• Increased horsepower and torque
• Sharper engine response
• A deeper and more aggressive exhaust sound
• Reduced weight compared with the factory system
• Improved durability through stainless-steel construction

The Supersport system is positioned between Fabspeed's quieter Maxflo system and its louder Muffler Bypass system, providing a more aggressive exhaust character without being its most extreme exhaust option.

Symptoms Of Wear Or Failure:
The original exhaust system on a 996 Turbo is now potentially more than two decades old, and heat cycles, condensation, road salt and vibration can gradually deteriorate exhaust components.

Common symptoms that may indicate exhaust deterioration include:

• Rust or corrosion on exhaust pipes and silencers
• Cracks around welds, joints or mounting points
• Exhaust gas leaks
• A blowing, ticking or hissing sound
• Increased or unusual exhaust noise
• Rattling from loose internal components or heat shields
• Exhaust fumes around the rear of the vehicle
• Reduced engine performance or throttle response
• Increased turbo lag where exhaust restriction becomes excessive
• Visible damage or deformation to exhaust pipework
• Failed or deteriorating catalytic converters
• Check Engine Light associated with catalyst efficiency or oxygen-sensor faults
• Sulphur or unusual exhaust smells
• Restricted exhaust flow caused by a damaged or partially blocked catalytic converter

Catalytic converters can deteriorate internally with age and repeated heat cycling. A damaged catalyst substrate may break apart, rattle or restrict exhaust flow, potentially reducing performance.

Why Replacement / Upgrading Matters:

• A damaged or heavily deteriorated exhaust system can affect more than sound and appearance. Exhaust leaks can allow gases to escape before reaching the intended outlets, while damaged or restricted catalytic converters can interfere with exhaust flow and reduce engine performance.
• This is particularly important on a turbocharged Porsche 996, where efficient exhaust flow downstream of the turbochargers plays an important role in overall engine and turbocharger performance.
• Replacing an ageing or restrictive exhaust system can help restore secure, leak-free exhaust operation while improving flow and durability. For owners seeking a performance upgrade, the Fabspeed Supersport system also provides larger-diameter pipework and a freer-flowing X-pipe configuration designed to take greater advantage of the 996 Turbo's performance potential.
• The stainless-steel construction also offers improved resistance to corrosion compared with an ageing original exhaust, making the system suitable both as a replacement for deteriorated components and as a performance-oriented upgrade.

Key Features:

• Fits Porsche 996 Turbo and Turbo S models from 2000–2005
• 70mm Supersport X-pipe exhaust design
• Runs from the turbo outlets to the exhaust tips
• Street version features 200-cell HJS Sport catalytic converters
• Claimed increase of approximately 32 whp and 37 ft-lb of torque
• 14–16 gauge CNC mandrel-bent T304L stainless-steel construction
• Designed to improve exhaust flow and sound
• Direct bolt-on installation
• More aggressive sound than Fabspeed's Maxflo system