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.jpg?width=440&height=320 "Fabspeed Competition Conversion Kit - For Fabspeed Valved Exhaust. Porsche 981 Cayman GT4 - 98111192106, 98111192206 - FS.POR.981GT4.CCK")
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Cayman GT4 3.8L 2015-16
The Fabspeed Porsche 981 Cayman GT4 / Boxster Spyder Competition Conversion Kit is a lightweight performance exhaust upgrade designed to transform an existing Fabspeed Motorsport Valvetronic Exhaust System into a louder, lighter and more aggressive competition-style exhaust configuration.
Fits:
- Porsche Boxster 981 Spyder 3.8L 2016
- Porsche Cayman GT4 3.8L 2015-16
Developed specifically for the Porsche 981 Cayman GT4 and Boxster Spyder models manufactured between 2015 and 2016, this conversion kit eliminates the valved exhaust section of the compatible Fabspeed system and replaces it with direct-flow stainless steel muffler bypass pipes.
The result is an uncompromising exhaust configuration that emphasises the distinctive sound of Porsche's naturally aspirated 3.8-litre flat-six engine.
The original Fabspeed Valvetronic Exhaust System provides adjustable exhaust sound through its electronically controlled, vacuum-actuated valve arrangement. This allows the driver to switch between quieter and more aggressive exhaust characteristics.
However, for Porsche enthusiasts who prefer maximum exhaust volume and a more focused motorsport experience, the additional valve hardware and associated sound-control features may no longer be required.
Fabspeed developed the Competition Conversion Kit to provide a straightforward alternative.
By replacing the valved section with fixed, free-flowing bypass pipes, the kit removes the need for exhaust valve operation in that section and delivers a consistently aggressive exhaust note.
Manufactured in-house by Fabspeed Motorsport from high-quality T304L stainless steel, the conversion pipes use a 2.5-inch (63.5 mm) diameter design to maintain an unrestricted exhaust path.
The kit also reduces exhaust system weight by approximately 11 lbs (5 kg) compared with the corresponding valved portion of the Fabspeed Motorsport exhaust.
This weight saving contributes to a lighter exhaust configuration, particularly desirable for track-focused vehicles where reducing unnecessary mass is an important consideration.
Installation is designed to be straightforward. The competition pipes bolt directly into the existing Fabspeed exhaust arrangement using the current Fabspeed AccuSeal clamps.
No cutting or welding is required, and the modification is reversible, allowing the original Fabspeed valved section to be reinstalled if a quieter exhaust configuration is required.
The Competition Conversion Kit is particularly suitable for dedicated track cars, motorsport-inspired builds and Porsche owners seeking the most aggressive sound available from their compatible Fabspeed exhaust system.
Important: This kit is only suitable for Porsche 981 Cayman GT4 and Boxster Spyder vehicles already equipped with the corresponding Fabspeed Motorsport Valvetronic Exhaust System. It is not compatible with the standard Porsche factory exhaust.
What This Product Does:
The Fabspeed Competition Conversion Kit replaces the valved section of the existing Fabspeed Motorsport Valvetronic Exhaust System with straight-through muffler bypass pipes.
Its primary functions include:
- Converts the Valved Exhaust into a Competition Configuration: Replaces the relevant valved section with fixed, direct-flow exhaust pipes.
- Eliminates Exhaust Valve Operation: Removes the adjustable sound-control function from the converted section.
- Creates a Louder Exhaust Note: Produces a consistently aggressive exhaust sound without the quieter valve setting.
- Enhances Flat-Six Engine Sound: Makes the distinctive 3.8-litre naturally aspirated Porsche engine more prominent.
- Reduces Exhaust Weight: Saves approximately 11 lbs compared with the original Fabspeed Valvetronic section.
- Provides Direct Exhaust Gas Flow: Uses straight-through pipework instead of the valved muffler arrangement.
- Supports Motorsport Applications: Provides a lightweight, high-volume exhaust configuration for appropriate track-focused use.
- Maintains Stainless Steel Durability: T304L stainless steel construction offers resistance to corrosion and high exhaust temperatures.
- Preserves Compatible Fabspeed Connections: Uses the existing exhaust mounting arrangement and AccuSeal clamps.
- Allows Reversible Conversion: The original Fabspeed valved section can be reinstalled without permanent exhaust modification.
- Simplifies the Converted Exhaust Section: Eliminates the valves and their moving mechanisms from the replaced portion of the system.
- Maintains the Existing Catalytic Converters: As a cat-back conversion, it does not require removing the vehicle's catalytic converters.
Symptoms Of Wear Or Failure:
The Fabspeed Competition Conversion Kit is primarily an exhaust performance upgrade, not a routine maintenance component.
However, it may also be considered when an existing compatible Valvetronic exhaust section has become damaged or when an owner wishes to eliminate the associated valve mechanism.
Common problems affecting the existing exhaust system include:
- Exhaust sound does not change when the valves are operated.
- A valve becomes stuck open or closed.
- Inconsistent response from the valve system.
- Metallic rattling around the valve assembly.
- Irregular or incomplete valve movement.
- Ticking, hissing or blowing sounds.
- Unexpected exhaust noise.
- Soot marks around pipe connections.
- Exhaust fumes near the vehicle.
- Increased noise under acceleration.
- Heavy rust or corrosion.
- Weakened welds.
- Cracked mounting points.
- Perforated pipe sections.
- Loose or damaged hardware.
Why Replacement / Upgrading Matters:
Installing the Fabspeed Competition Conversion Kit changes the character and weight of an existing Valvetronic exhaust system.
The main advantages are reduced weight, simplified exhaust construction and a more aggressive, consistently loud exhaust note.
- Maximum Exhaust Sound: Removes the quieter valved operating mode and delivers a consistently aggressive exhaust character.
- Motorsport-Inspired Driving Experience: Emphasises the sound of the Porsche 981 GT4 and Spyder's naturally aspirated flat-six engine.
- Approximately 11 lb Weight Reduction: Eliminates weight associated with the replaced Valvetronic section.
- Simplified Exhaust Arrangement: Removes moving exhaust valve mechanisms from the converted section.
- Direct Exhaust Flow: Uses 2.5-inch stainless steel bypass pipes.
- Durable Stainless Steel Construction: Manufactured from corrosion-resistant T304L stainless steel.
- Compatible with Existing Fabspeed Systems: Designed specifically for the corresponding Fabspeed Valvetronic Exhaust.
- Reversible Modification: Allows the original valved components to be reinstalled.
- No Cutting or Welding: Uses the existing exhaust connections for bolt-on installation.
- Ideal for Track-Focused Builds: Provides a lighter, louder exhaust configuration.
- Reduced Dependence on Valve Components: Eliminates valve-related mechanical operation from the replaced section.
- Fabspeed Motorsport Engineering: Manufactured by a specialist performance exhaust producer.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR981GT4CCK
The product you are viewing cross references to these numbers
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- Porsche 997 MK1 GT2 2007-09
- Porsche 997 MKII GT2 RS 2011-13
Rear silencer including reduced cell catalytic converter
Fits:
Porsche 997 GT2 and GT2 RS 2007-2012
The component is perfectly interchangeable with the original components, following the instructions in the constructor's workshop manual
RACETRACK USE ONLY
These components are designed and developed for racetrack use and to maximise the car's performance. They are not street legal and must be installed by professionals in the sector
ECU REMAPPING - ENGINE LIGHT
Replacement or removal of components such as catalytic converters, GPFs and electric actuators may cause the engine warning light to come on. In this case, the installer must reprogram the software to eliminate the light
REDUCED CELL CATALYTIC CONVERTER - 200 CELLS
Race catalytic converters have fewer cells than standard factory systems. This reduces exhaust back pressure while still maintaining the operation of the catalytic converter, and improves performance and sound
SOUND - TUBI SOUND
Tubi Sound is the standard sound of Tubi Style exhausts, louder and more powerful than the original sound. This sound represents our brand
END TIPS DESIGN - OE
The muffler must be used in conjunction with the original exhaust end tips
SYSTEM FINISH - POLISHED
Mirror finishes are highly reflective and created by polishing the stainless steel. The polishing process enhances appearance and consistency, making cleaning easier. A special rolling procedure is used. It is essential to remove deep scratches as any surface defects will be very noticeable on the finished product. it improves corrosion resistance. The polishing eradicates crevices where corrosive particles can lodge themselves
END TIPS NUMBER AND POSITION - 1 + 1 AT THE SIDES
The tailpipes are located low down at the sides of the car. There is one tailpipe at each side
MATERIAL - AISI 304 STAINLESS STEEL
A choice stainless steel ideal for aggressive environments where combustion emissions can cause serious chemical corrosion on other types of metal
MAIN PIPE DIMENSION - 65mm
This is the diameter of the main pipe of the exhaust system
EXHAUST VALVE - NO VALVE
The exhaust system does not include a valve and always guarantees the most impressive sound. If the standard system includes one, control of the valve by both the engine ECU and by the pilot via the specific control systems is no longer possible
HEAT SHIELDING - INSULATED
Tubi Style ensures maximum protection for components in critical and dangerous positions by using insulation made with the same technology employed by car manufacturers
- Porsche 997 MKII GT2 RS 2011-13
The Fabspeed 70mm Supersport X-Pipe Exhaust System is a high-performance exhaust upgrade designed specifically for the 2011 Porsche 997.2 GT2 RS.
Fits:
- Porsche 997 MKII GT2 RS 2011-13
The system replaces the factory rear mufflers and catalytic converters with a freer-flowing 70mm X-pipe arrangement incorporating 200-cell HJS Sport Catalytic Converters. It is engineered to reduce exhaust restriction, improve throttle response and give the GT2 RS a more pronounced, exotic performance exhaust note.
Manufactured from high-quality 14–16 gauge CNC mandrel-bent T304L stainless steel, the system is designed to withstand the extreme temperatures and operating demands of the twin-turbocharged GT2 RS.
Fabspeed's Deluxe GT2 Style exhaust tips are also included, providing a finished appearance that complements the rear of the vehicle.
What This Product Does:
The exhaust system carries combustion gases away from the turbochargers and engine while controlling exhaust flow, emissions and sound.
On a high-performance turbocharged engine such as the GT2 RS, reducing unnecessary exhaust restriction downstream of the turbochargers can help gases leave the system more efficiently.
The Fabspeed Supersport X-Pipe is designed to:
- Improve exhaust gas flow
- Reduce post-turbo exhaust restriction
- Improve throttle response
- Support more responsive turbocharger operation
- Produce a stronger and more exotic exhaust sound
- Replace the restrictive factory rear mufflers
- Provide high-flow catalytic converter performance
- Improve long-term corrosion resistance
- Provide a durable stainless-steel replacement for ageing factory components
- Enhance the appearance of the exhaust with Deluxe GT2 Style tips
The X-pipe layout also allows exhaust gases from both sides of the engine to interact within the system, contributing to its distinctive sound characteristics.
Symptoms Of Wear Or Failure:
The exhaust system on a high-performance vehicle such as the 997.2 GT2 RS experiences extreme heat, vibration and repeated thermal cycles.
Signs of deterioration can include:
- Exhaust blowing, ticking or hissing noises
- Cracks around pipes, welds or joints
- Black soot around leaking connections
- Loose or damaged exhaust clamps
- Corrosion or surface deterioration
- Metallic rattling from the catalytic converters
- Increased or irregular exhaust noise
- Exhaust fumes around the rear of the vehicle
- Reduced throttle response
- Increased turbo lag
- Loss of engine performance
- Check Engine Light associated with catalyst efficiency
- Unusual sulphur-like exhaust smells
- Damaged or deformed exhaust pipework
- Loose exhaust tips or poor outlet alignment
Catalytic converters can also deteriorate internally through extreme heat and repeated thermal cycling. The catalyst substrate may break apart, become loose or partially block the exhaust path.
Why Replacement Matters:
A damaged or restrictive exhaust system can affect both engine performance and reliability.
Exhaust leaks allow hot gases to escape before reaching the intended outlets. This can increase heat exposure around nearby components, cause unwanted noise and gradually worsen as cracks or joints deteriorate.
A damaged or partially blocked catalytic converter can create additional exhaust backpressure.
On a twin-turbocharged Porsche GT2 RS, excessive restriction downstream of the turbochargers can work against efficient exhaust evacuation and may negatively affect throttle and turbocharger response.
Replacing deteriorated exhaust components helps restore:
- A secure and leak-free exhaust path
- Efficient exhaust gas evacuation
- Consistent turbo response
- Correct catalytic converter operation
- Proper exhaust outlet positioning
- Reduced risk of further heat or corrosion-related damage
For a vehicle with a healthy standard exhaust, upgrading to the Fabspeed system provides the additional advantages of freer exhaust flow, a more aggressive exhaust note and performance-focused construction.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR9972GT2RSSSX
The product you are viewing cross references to these numbers