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Sports Exhaust Stainless Steel Non-Valved. Porsche 987.1 Boxster / 987.1 Cayman ❭ 9MS98711311731-
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Sports Stainless Steel Non-Valved Silencer
This sports stainless steel non-valved silencer is a
performance exhaust upgrade designed for all Porsche 987.1 Boxster and Cayman
models from 2005 to 2009. Engineered to enhance sound, improve throttle
response and reduce weight, this system delivers a more engaging driving
experience while maintaining everyday usability.
Fits:
- Porsche Boxster 987 2.7L 2005-08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
Constructed from high-quality 304 grade stainless steel and precision welded, this exhaust silencer offers durability, corrosion resistance and long-term reliability, backed by a lifetime guarantee.
What This Sports Silencer Does
The exhaust silencer controls the flow of exhaust gases and shapes the sound profile of your Porsche. This upgraded sports silencer improves both performance characteristics and exhaust tone.
It helps:
• Improve exhaust gas flow for better engine efficiency
• Deliver a deeper, sportier exhaust sound
• Enhance throttle response and driving feel
• Reduce backpressure compared to the factory system
• Maintain compliance with emissions regulations
Key Features and Benefits
304 Grade Stainless Steel Construction
Manufactured from premium 304 stainless steel for maximum durability, corrosion
resistance and long service life.
Precision Welded with Lifetime Guarantee
Built to high standards and backed by a lifetime guarantee for peace of mind.
6kg Weight Saving
Reduces overall vehicle weight compared to the OEM muffler, contributing to
improved handling and performance.
X-Pipe Performance Design
Features an X-pipe configuration to optimise exhaust flow and deliver a more
balanced and aggressive exhaust note.
Noticeable Sound Improvement
Produces a deeper, more pronounced sports car sound without excessive noise.
Improved Throttle Response
Enhanced airflow helps the engine respond more quickly to throttle inputs.
No Check Engine Light
Designed to work with factory systems without triggering warning lights.
Emissions Compliant
Maintains compliance with emissions regulations for road use.
Direct Bolt-On Installation
Direct replacement for the OEM muffler with no cutting or welding required.
Choice of Exhaust Tips
Available with black or silver tips to suit your preferred finish.
Why Upgrade Your Porsche 987 Exhaust
Factory exhaust systems are designed to meet noise and emissions regulations, often limiting sound and performance.
Common reasons to upgrade include:
• Muted factory exhaust tone
• Restrictive internal design
• Heavier OEM components
• Desire for improved driving engagement
This sports silencer addresses these limitations with improved flow, reduced weight and enhanced sound.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
9MS98711311731-
The product you are viewing cross references to these numbers
- Porsche Boxster 718 2.0L Manual (300 Bhp) 2017>>
- Porsche Boxster 718 2.0L PDK (300 Bhp) 2017>>
- Porsche Boxster S 718 2.5L Manual (350 Bhp) 05/2017>>
- Porsche Boxster S 718 2.5L PDK (350 Bhp) 05/2017>>
- Porsche Boxster T 718 2.0L Manual (300 Bhp) 01/2019>>
- Porsche Boxster T 718 2.0L PDK (300 Bhp) 01/2019>>
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Cayman 718 2.0L Manual (300 Bhp)
- Porsche Cayman 718 2.0L PDK (300 Bhp)
- Porsche Cayman S 718 2.5L Manual (350 Bhp)
- Porsche Cayman S 718 2.5L PDK (350 Bhp)
- Porsche Cayman T 718 2.0L Manual (300 Bhp)
- Porsche Cayman T 718 2.0L PDK (300 Bhp)
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)

718 Boxster, Cayman & GTS with and without GPF (gasoline particulate filter)
2.0/2.5Ltr 2016 onwards
RACETRACK USE ONLY:
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.
The kit includes the right and left-hand mufflers without valve. It can be assembled on the OE central silencer, or in combination with the Tubi Style central silencer.
The component is perfectly interchangeable with the original components, following the instructions in the constructor's workshop manual.
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 exhaust valve by both the engine ECU and by the driver via the specific control systems is no longer possible.
The muffler must be used in conjunction with the original exhaust end tips.
END TIPS DESIGN OE
The muffler must be used in conjunction with the original exhaust end tips.
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.
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Fits:
Porsche 718 Boxster GTS 2.5L 2016>>2020
Porsche 718 Cayman GTS 2.5L 2016>>2020
Particulate Filter: Backwards
Pipe Diameter: 2.50" (63.50mm)
Tailpipe: GT-100
Parts Assembly:
MSPO251: LH Front Connecting Pipe
MSPO252: RH Front Connecting Pipe
MSPO253: LH Rear Connecting Pipe
MSPO254: RH Rear Connecting Pipe
MSPO255: Rear Silencer Balance Pipe
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO137
The product you are viewing cross references to these numbers
- Porsche Boxster GTS 718 2.5L Manual (365 Bhp) 05/2017>>
- Porsche Boxster GTS 718 2.5L PDK (365 Bhp) 05/2017>>
- Porsche Cayman GTS 718 2.5L Manual (365 Bhp)
- Porsche Cayman GTS 718 2.5L PDK (365 Bhp)
Fits:
Porsche 718 Boxster GTS 2.5L 2016>>2020
Porsche 718 Cayman GTS 2.5L 2016>>2020
Particulate Filter: Backwards
Pipe Diameter: 2.50" (63.50mm)
Tailpipe: 102mm Carbon Jet
Parts Assembly:
MSPO251: LH Front Connecting Pipe
MSPO252: RH Front Connecting Pipe
MSPO253: LH Rear Connecting Pipe
MSPO254: RH Rear Connecting Pipe
MSPO255: Rear Silencer Balance Pipe
MSTIP226: x2 Carbon Jet-100 Trims (To Fit 63.5mm OD Outlets) (Fits All Systems That Use MSVW373 Family Of Trims)
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
SSXPO138
The product you are viewing cross references to these numbers
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