All Silencers / Mufflers
Transform your Porsche GT4 RS or Spyder RS with Fabspeed’s Valved X-Pipe Exhaust System—a perfect blend of power, sound, and precision engineering.
Fits:
Porsche 718 (982) Cayman GT4 RS 2022>>
Porsche 718 (982) Boxster Spyder RS 2023>>
Sound & Performance:
- Our X-Pipe design merges the engine's two exhaust banks for an intoxicating 9,000 RPM symphony, offering a significant increase in volume over the stock system.
- Retains the factory PSE (Porsche Sport Exhaust) functionality, allowing you to quiet the exhaust note at will—ideal for those seeking both performance and comfort.
- Adds +7.5HP (+6.2HP at the rear wheels) at 8,100 RPM and +11 ft/lbs of torque at 3,500 RPM.
- Saves 10 lbs (5kg) compared to the factory system for a lighter, faster ride.
- Helmholtz Technology eliminates drone for a pure driving experience with no unwanted noise frequencies.
- Investment cast X-Pipe for superior exhaust scavenging, defeating resonance and maximizing power output.
Perfect Fit & Design:
- Constructed from aerospace-grade titanium for lightweight durability, with mandrel-bent tubing for optimal flow.
- Laser scanned and CAD designed for a perfect OEM fit.
- 100% bolt-on, simple DIY installation with included hardware and online video guide.
- Helical Limited exhaust valves—imported from the UK and used by the world's top brands like Ferrari, McLaren, and Porsche—ensure maximum reliability.
Emissions Legal:
- This cat-back system is emissions legal in all 50 states and the rest of the world (ROW).
- No check engine light guaranteed!
Why Choose Fabspeed?
At Fabspeed, we engineer every system in-house—no outsourcing like other brands. Our development process includes extensive 3D scanning, dyno testing, and multiple revisions to ensure the best possible product. With over 30 years of experience, we pride ourselves on producing the highest-quality, performance-boosting exhaust systems for Porsche vehicles.
Fabspeed guarantees that our GT4 RS Valved X-Pipe Exhaust System will provide the best sound, the most reliable performance, and the greatest power increase on the market. We use only the finest components, backed by our lifetime warranty for peace of mind.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
FSPOR718GT4RSVLV
The product you are viewing cross references to these numbers
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 718 Cayman GT4 - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Boxster Spyder - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Cayman GTS 4.0L - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Boxster GTS 4.0L - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Parts Assembly:
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
NOTE: This system is compatible exclusively with 718 models that feature a petrol particulate filter (PPF) and Porsche's PDK transmission. PPFs were installed on 718 models manufactured after February 2020. If you are uncertain whether your vehicle is equipped with a PPF, please feel free to contact us with your VIN number for confirmation.
Why purchase a Milltek sport exhaust?
Sharper Throttle Response...
Enjoy quicker engine response with optimized airflow and enhanced performance, improving the overall driving experience.
Substantial Weight Savings...
Lighter than the original exhaust system, reducing overall weight for improved agility and handling.
Premium T304L Aircraft-Grade Stainless Steel...
Built from anti-magnetic, high-quality stainless steel that resists discoloration, offering excellent durability and performance.
Mandrel Bending for Better Gas Flow...
The system uses mandrel bending for full-flow bends, allowing exhaust gases to flow freely and boosting engine efficiency without sacrificing mid-range torque.
Lifetime Guarantee...
Milltek systems come with a lifetime guarantee for the original purchaser, offering peace of mind. (Excludes cats and flexes)
Designed and Manufactured in the UK...
Since 1983, Milltek has been designing and building exhaust systems with over 40 years of technical expertise, ensuring the highest quality and precision.
Ever-Expanding Range of Performance Exhausts...
Milltek offers a continuously expanding selection of exhaust systems tailored for performance vehicles like your Porsche.
--Pipe diameter equals 60.3mm / 2.37 inches.
--Please note that this product does not have official certification for use in Europe.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO191
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 718 Cayman GT4 - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Boxster Spyder - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Cayman GTS 4.0L - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Boxster GTS 4.0L - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Parts Assembly:
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
NOTE: This system is compatible exclusively with 718 models that feature a petrol particulate filter (PPF) and Porsche's PDK transmission. PPFs were installed on 718 models manufactured after February 2020. If you are uncertain whether your vehicle is equipped with a PPF, please feel free to contact us with your VIN number for confirmation.
Why purchase a Milltek sport exhaust?
Sharper Throttle Response...
Enjoy quicker engine response with optimized airflow and enhanced performance, improving the overall driving experience.
Substantial Weight Savings...
Lighter than the original exhaust system, reducing overall weight for improved agility and handling.
Premium T304L Aircraft-Grade Stainless Steel...
Built from anti-magnetic, high-quality stainless steel that resists discoloration, offering excellent durability and performance.
Mandrel Bending for Better Gas Flow...
The system uses mandrel bending for full-flow bends, allowing exhaust gases to flow freely and boosting engine efficiency without sacrificing mid-range torque.
Lifetime Guarantee...
Milltek systems come with a lifetime guarantee for the original purchaser, offering peace of mind. (Excludes cats and flexes)
Designed and Manufactured in the UK...
Since 1983, Milltek has been designing and building exhaust systems with over 40 years of technical expertise, ensuring the highest quality and precision.
Ever-Expanding Range of Performance Exhausts...
Milltek offers a continuously expanding selection of exhaust systems tailored for performance vehicles like your Porsche.
--Pipe diameter equals 60.3mm / 2.37 inches.
--Please note that this product does not have official certification for use in Europe.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO192
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 718 Cayman GT4 - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Boxster Spyder - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Cayman GTS 4.0L - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Boxster GTS 4.0L - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Parts Assembly:
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm JET-115
NOTE: This system is compatible exclusively with 718 models that feature a petrol particulate filter (PPF) and Porsche's PDK transmission. PPFs were installed on 718 models manufactured after February 2020. If you are uncertain whether your vehicle is equipped with a PPF, please feel free to contact us with your VIN number for confirmation.
Why purchase a Milltek sport exhaust?
Sharper Throttle Response...
Enjoy quicker engine response with optimized airflow and enhanced performance, improving the overall driving experience.
Substantial Weight Savings...
Lighter than the original exhaust system, reducing overall weight for improved agility and handling.
Premium T304L Aircraft-Grade Stainless Steel...
Built from anti-magnetic, high-quality stainless steel that resists discoloration, offering excellent durability and performance.
Mandrel Bending for Better Gas Flow...
The system uses mandrel bending for full-flow bends, allowing exhaust gases to flow freely and boosting engine efficiency without sacrificing mid-range torque.
Lifetime Guarantee...
Milltek systems come with a lifetime guarantee for the original purchaser, offering peace of mind. (Excludes cats and flexes)
Designed and Manufactured in the UK...
Since 1983, Milltek has been designing and building exhaust systems with over 40 years of technical expertise, ensuring the highest quality and precision.
Ever-Expanding Range of Performance Exhausts...
Milltek offers a continuously expanding selection of exhaust systems tailored for performance vehicles like your Porsche.
--Pipe diameter equals 60.3mm / 2.37 inches.
--Please note that this product does not have official certification for use in Europe.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO193
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 718 Cayman GT4 - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Boxster Spyder - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Cayman GTS 4.0L - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Boxster GTS 4.0L - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Parts Assembly:
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
NOTE: This system is compatible exclusively with 718 models that feature a petrol particulate filter (PPF) and Porsche's PDK transmission. PPFs were installed on 718 models manufactured after February 2020. If you are uncertain whether your vehicle is equipped with a PPF, please feel free to contact us with your VIN number for confirmation.
Why purchase a Milltek sport exhaust?
Sharper Throttle Response...
Enjoy quicker engine response with optimized airflow and enhanced performance, improving the overall driving experience.
Substantial Weight Savings...
Lighter than the original exhaust system, reducing overall weight for improved agility and handling.
Premium T304L Aircraft-Grade Stainless Steel...
Built from anti-magnetic, high-quality stainless steel that resists discoloration, offering excellent durability and performance.
Mandrel Bending for Better Gas Flow...
The system uses mandrel bending for full-flow bends, allowing exhaust gases to flow freely and boosting engine efficiency without sacrificing mid-range torque.
Lifetime Guarantee...
Milltek systems come with a lifetime guarantee for the original purchaser, offering peace of mind. (Excludes cats and flexes)
Designed and Manufactured in the UK...
Since 1983, Milltek has been designing and building exhaust systems with over 40 years of technical expertise, ensuring the highest quality and precision.
Ever-Expanding Range of Performance Exhausts...
Milltek offers a continuously expanding selection of exhaust systems tailored for performance vehicles like your Porsche.
--Pipe diameter equals 60.3mm / 2.37 inches.
--Please note that this product does not have official certification for use in Europe.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO190
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Shop Securely
12 Month Warranty
Worldwide Delivery
Fits:
Porsche 718 Cayman GT4 - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Boxster Spyder - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Cayman GTS 4.0L - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Porsche 718 Boxster GTS 4.0L - Only for OPF/GPF equipped vehicles with Porsche's PDK transmission*
Parts Assembly:
Pipe Diameter: 2.37" (60.30mm)
Tailpipe: 115mm GT115
NOTE: This system is compatible exclusively with 718 models that feature a petrol particulate filter (PPF) and Porsche's PDK transmission. PPFs were installed on 718 models manufactured after February 2020. If you are uncertain whether your vehicle is equipped with a PPF, please feel free to contact us with your VIN number for confirmation.
Why purchase a Milltek sport exhaust?
Sharper Throttle Response...
Enjoy quicker engine response with optimized airflow and enhanced performance, improving the overall driving experience.
Substantial Weight Savings...
Lighter than the original exhaust system, reducing overall weight for improved agility and handling.
Premium T304L Aircraft-Grade Stainless Steel...
Built from anti-magnetic, high-quality stainless steel that resists discoloration, offering excellent durability and performance.
Mandrel Bending for Better Gas Flow...
The system uses mandrel bending for full-flow bends, allowing exhaust gases to flow freely and boosting engine efficiency without sacrificing mid-range torque.
Lifetime Guarantee...
Milltek systems come with a lifetime guarantee for the original purchaser, offering peace of mind. (Excludes cats and flexes)
Designed and Manufactured in the UK...
Since 1983, Milltek has been designing and building exhaust systems with over 40 years of technical expertise, ensuring the highest quality and precision.
Ever-Expanding Range of Performance Exhausts...
Milltek offers a continuously expanding selection of exhaust systems tailored for performance vehicles like your Porsche.
--Pipe diameter equals 60.3mm / 2.37 inches.
--Please note that this product does not have official certification for use in Europe.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO189
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Shop Securely
12 Month Warranty
Worldwide Delivery
Until February 2020
This exhaust system can be fitted on every 4.0ltr model produced until February 2020. In March a new fixing system based on silent block has been introduced
SOUND: STRAIGHT PIPE
The straight pipe version guarantees a direct path from the engine, removing all factors which may affect the acoustic tuning.
EXHAUST VALVE: PNEUMATIC
The exhaust system is complete with pneumatic valve to replace the standard pneumatic valve installed on the car. Control of the original valve is still provided.
END TIPS DESIGN: OE
The muffler must be used in conjunction with the original exhaust end tips.
RACETRACK USE ONLY
STRAIGHT PIPE AISI 304 STAINLESS STEEL
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Shop Securely
12 Month Warranty
Worldwide Delivery
From March 2020
This exhaust system can be fitted on every 4.0ltr model produced from March 2020. In March a new fixing system based on silent block has been introduced
SOUND STRAIGHT PIPE
The straight pipe version guarantees a direct path from the engine, removing all factors which may affect the acoustic tuning.
EXHAUST VALVE PNEUMATIC
The exhaust system is complete with pneumatic valve to replace the standard pneumatic valve installed on the car. Control of the original valve is still provided.
END TIPS DESIGN OE
The muffler must be used in conjunction with the original exhaust end tips.
RACETRACK USE ONLY
STRAIGHT PIPE AISI 304 STAINLESS STEEL
- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Boxster Spyder 718 4.0L (420 Bhp)
- Porsche Boxster 25 Years 718 4.0L Manual (400 Bhp)
- Porsche Boxster 25 Years 718 4.0L PDK (400 Bhp)
- Porsche Cayman GTS 718 4.0L Manual (400 Bhp)
- Porsche Cayman GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Shop Securely
12 Month Warranty
Worldwide Delivery
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.
