All Silencers / Mufflers


- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L

Weight: 6.7kg
Fits:
Porsche 718 GT4 RS 4.0L
- The Exhaust Sport Valvetronic Silencer is a performance upgrade designed specifically for Porsche 718 GT4 RS
- This silencer replaces the stock exhaust system with a valvetronic setup, offering the ability to control the sound levels of the exhaust.
- The valvetronic system allows drivers to switch between different modes, offering a quiet and more subdued exhaust note for daily driving, and a louder, more aggressive sound for spirited driving or track days.
- The upgraded silencer enhances the overall exhaust flow, reducing backpressure and increasing horsepower and torque output.
- It can provide a deeper, more exhilarating exhaust note, offering a more sporty and engaging driving experience.
- Consider local regulations and laws regarding emissions and noise levels before purchasing and installing this upgrade.
- Default position of the valve is OPEN. The car will start loud if there is no vacuum in the system and will need few seconds to build up the vacuum to close the valves.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606001840
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
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 GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 - 2020 Onwards
Porsche 718 Boxster GTS 4.0ltr - 2020 Onwards
Exhaust System with GPF (gasoline particulate filter) delete
Pipe diameter - 60.30mm
Parts Assembly:
MSPO258: LH GPF Bypass
MSPO259: RH GPF Bypass
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263 x2: Outlet Pipes
MSTIP253 x2: 4.5" Tailpipe Trim Burnt Titanium
Requires Stage 2 ECU Software update





- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 - 2020 Onwards
Porsche 718 Boxster GTS 4.0ltr - 2020 Onwards
Exhaust System with GPF (gasoline particulate filter) delete
Pipe diameter - 60.30mm
Parts Assembly:
MSPO258: LH GPF Bypass
MSPO259: RH GPF Bypass
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263 x2: Outlet Pipes
MSTIP251 x2: 4.5" Tailpipe Trim Cerakote Black
Requires Stage 2 ECU Software update





- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 - 2020 Onwards
Porsche 718 Boxster GTS 4.0ltr - 2020 Onwards
Exhaust System with GPF (gasoline particulate filter) delete
Pipe diameter - 60.30mm
Parts Assembly:
MSPO258: LH GPF Bypass
MSPO259: RH GPF Bypass
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263 x2: Outlet Pipes
MSTIP244 x2: 4.5" Tailpipe Trim Jet-115 Carbon
Requires Stage 2 ECU Software update





- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 - 2020 Onwards
Porsche 718 Boxster GTS 4.0ltr - 2020 Onwards
Exhaust System with GPF (gasoline particulate filter) delete
Pipe diameter - 60.30mm
Parts Assembly:
MSPO258: LH GPF Bypass
MSPO259: RH GPF Bypass
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263 x2: Outlet Pipes
MSTIP250 x2: 4.5" Tailpipe Trim Polished
Requires Stage 2 ECU Software update





- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 - 2020 Onwards
Porsche 718 Boxster GTS 4.0ltr - 2020 Onwards
Exhaust System with GPF (gasoline particulate filter) delete
Pipe diameter - 60.30mm
Parts Assembly:
MSPO258: LH GPF Bypass
MSPO259: RH GPF Bypass
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263 x2: Outlet Pipes
MSTIP252 x2: 4.5" Tailpipe Trim Titanium
Requires Stage 2 ECU Software update





- 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

The Milltek GPF-Back Exhaust System redefines your driving experience. By replacing your factory exhaust with Milltek's wider, precision-engineered pipework, you'll experience a sharper throttle response, improved engine efficiency, and a striking aesthetic that complements your vehicle’s high-performance nature.
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*
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 Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Pre Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 4.0ltr - 2019 to 2020
Porsche 718 Boxster GTS 4.0ltr - 2019 to 2020
Only for cars with Gas Particulate Filter (GPF)
Sports Exhaust System from Gas Particulate Filter (GPF) back
Pipe diameter - 60.30mm
Parts Assembly:
MSPO260: LH Valve Assembly
MSPO261: RH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO263 x2: Outlet Pipes
MSTIP253 x2: 4.5" Tailpipe Trim Burnt Titanium (115 GT)





- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Pre Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 4.0ltr - 2019 to 2020
Porsche 718 Boxster GTS 4.0ltr - 2019 to 2020
Only for cars with Gas Particulate Filter (GPF)
Sports Exhaust System from Gas Particulate Filter (GPF) back
Pipe diameter - 60.30mm
Parts Assembly:
MSPO260: LH Valve Assembly
MSPO261: RH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO263 x2: Outlet Pipes
MSTIP244 x2: 4.5" Tailpipe Trim Carbon Jet (115 GT)





- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Pre Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 4.0ltr - 2019 to 2020
Only for cars with Gas Particulate Filter (GPF)
Sports Exhaust System from Gas Particulate Filter (GPF) back
Pipe diameter - 60.30mm
Parts Assembly:
MSPO260: LH Valve Assembly
MSPO261: RH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO263 x2: Outlet Pipes
MSTIP251 x2: 4.5" Tailpipe Trim Cerakote Black (115 GT)
Requires Stage 2 ECU Software update





- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Pre Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 4.0ltr - 2019 to 2020
Only for cars with Gas Particulate Filter (GPF)
Sports Exhaust System from Gas Particulate Filter (GPF) back
Pipe diameter - 60.30mm
Parts Assembly:
MSPO260: LH Valve Assembly
MSPO261: RH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO263 x2: Outlet Pipes
MSTIP250 x2: 4.5" Tailpipe Trim Polished (115 GT)





- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Pre Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 4.0ltr - 2019 to 2020
Porsche 718 Boxster GTS 4.0ltr - 2019 to 2020
Only for cars with Gas Particulate Filter (GPF)
Sports Exhaust System from Gas Particulate Filter (GPF) back
Pipe diameter - 60.30mm
Parts Assembly:
MSPO260: LH Valve Assembly
MSPO261: RH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO263 x2: Outlet Pipes
MSTIP252 x2: 4.5" Tailpipe Trim Titanium (115 GT)





- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L

Fits:
Porsche 718 Cayman GT4 4.0ltr - 2019 onwards
Only for cars with Gas Particulate Filter (GPF)
Gas Particulate Filter By-Pass Pies (GPF)
Pipe diameter - 70mm
Parts Assembly:
MSPO258: LH GPF/OPF Bypass
MSPO259: RH GPF/OPF Bypass
Fits with OE and Milltek Sport OPF Back Systems
Requires Stage 2 ECU Remap





- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 - 2020 Onwards
Porsche 718 Boxster GTS 4.0ltr - 2020 Onwards
Particulate Filter - backwards
Pipe diameter - 60.30mm
Parts Assembly:
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263 x2: Outlet Pipes
MSTIP253 x2: 4.5" Tailpipe Trim Burnt Titanium





- Porsche Boxster GTS 718 4.0L Manual (400 Bhp)
- Porsche Boxster GTS 718 4.0L PDK (400 Bhp)
- Porsche Cayman GT4 718 4.0L / GT4 RS 718 4.0L
Post Feb 2020 build only

Fits:
Porsche 718 Cayman GT4 - 2020 Onwards
Porsche 718 Boxster GTS 4.0ltr - 2020 Onwards
only with GPF (Gasoline Particulate Filter)
Particulate Filter - backwards
Pipe diameter - 60.30mm
Parts Assembly:
MSPO269: LH Valve Assembly
MSPO270: LH Valve Assembly
MSPO262: Rear Silencer Assembly
MSPO271: LH Mounting Bracket
MSPO272: RH Mounting Bracket
MSPO263 x2: Outlet Pipes
MSTIP251 x2: 4.5" Tailpipe Trim Cerakote Black



Title: Upgrading Your Porsche's Exhaust System: Original Porsche vs. Aftermarket Mufflers and Sports Exhaust
Keywords: Porsche, exhaust mufflers, sports exhaust, upgrade, replacement, technical specifications, known issues, Design911, professional advice
Summary:
Original Porsche Exhaust Mufflers:
Designed and manufactured by Porsche for specific models
Engineered to meet stringent quality standards
Precisely tuned for optimal performance and sound
Maintains the authenticity and originality of your Porsche
Compatible with existing components and systems
Aftermarket Exhaust Mufflers:
Produced by third-party manufacturers specializing in performance upgrades
Offer a wide range of options for customization
Can enhance exhaust note, performance, and aesthetics
May provide better flow dynamics for improved engine efficiency
Consider compatibility and fitment with your Porsche model
Sports Exhaust Systems:
Designed to maximize performance and enhance the driving experience
Typically include larger diameter pipes, sportier mufflers, and optimized airflow
Offer increased horsepower and torque
Produce a more aggressive and exhilarating exhaust sound
Check local regulations regarding noise restrictions
When considering purchasing an exhaust muffler or sports exhaust for your Porsche, several factors should be considered. Firstly, determine your specific requirements, whether it's a slight improvement in sound or a significant performance boost. Research the technical specifications and compatibility of the chosen exhaust system with your Porsche model. Consider your budget and the reputation of the manufacturer or retailer. It's crucial to ensure the product is backed by warranties or guarantees.
At Design911, we can assist you in finding the correct exhaust part for your Porsche. Our knowledgeable team can offer professional advice based on your requirements and guide you through the selection process. We stock a wide range of original Porsche parts as well as reputable aftermarket options, ensuring you have access to high-quality choices. Trust Design911 to help you enhance your Porsche's performance and provide an unmatched driving experience.
Note: The summary provided above is a general overview of the benefits and considerations related to upgrading the exhaust system of a Porsche vehicle. It's always recommended to consult with a professional and consider individual vehicle specifications and regulations before making any modifications.