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Design 911 Design 911 supply Porsche parts, Porsche spares and Porsche accessories, to both retail and to the trade. Our Porsche product and accessory range includes brakes, exhausts, tyres, wheels and Porsche panels and interiors. https://d911api.datadial.net/images/schemaLogo.png https://d911api.datadial.net/images/schemaLogo.png +443456003478 https://d911api.datadial.net Facebook Instagram

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DISPLAYING 1 to 3 (of 3 products)
TSPO718GT4C19.000.AV
Product Information
Product Information
Sports exhaust Porsche 718 GT4, SPYDER & GTS 4.0

tubi

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
TSPO718SPYC19.000.AV
Product Information
Product Information
Sports exhaust straight pipe Porsche 718 GT4, SPYDER & GTS 4.0

tubi

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
9M718TISILENCER4.0
Product Information
Product Information
Sports exhaust valved rear silencer, titanium. 

Fits:

Porsche 718 Boxster Spyder - 2020 to 2024
Porsche  718 Boxster GTS 4.0ltr - 2020 to 2024
Porsche 718 Cayman GT4 - 2020 to 2024
Porsche 718 Cayman GTS 4.0ltr - 2020 to 2024

Constructed from Aerospace grade TC4 titanium precision welded with a lifetime guarantee 

Weighing in at 7kg in total with a weight saving of 8kg over the stock silencer(15kg) 

Fits all Porsche 718 4.0 GT4 /Spyder/GTS vehicles (2020-)

Direct bolt on installation with zero exhaust drone 

Fits original exhaust tips or optional 9m GT4RS titanium style X pipe tips



Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

9M718TISILENCER4.0
982251053D
982251053G
982251053F
982251053H
982251053K

The product you are viewing cross references to these numbers
DISPLAYING 1 to 3 (of 3 products)
About Switchable Silencers / Mufflers

Porsche Switchable Silencers & Mufflers - Dual-Mode Performance Exhaust Systems

Switchable Silencers / Mufflers offer Porsche owners the best of both worlds—refined, road-friendly exhaust sound when cruising, and an aggressive, performance-focused tone at the touch of a button. Using valve-controlled technology, these exhaust systems allow drivers to switch between quiet and sport modes, delivering enhanced sound, performance, and driving engagement on demand.

Available from Design911, Porsche switchable silencers include both genuine Porsche-engineered systems and high-quality aftermarket performance options, all designed to integrate seamlessly with your vehicle’s existing exhaust components and control systems.

What Do Switchable Silencers / Mufflers Do?

Switchable silencers use internal exhaust valves to control sound level and exhaust flow.

Core Functions:

  • Allow selectable quiet and sport exhaust modes.
  • Improve exhaust gas flow under performance driving.
  • Enhance throttle response and engine efficiency.
  • Maintain refined sound levels for everyday driving.
  • Deliver a more engaging driving experience on demand.

These systems adapt your Porsche’s character to suit any driving situation.

Why Do Standard Exhaust Silencers Fail or Fall Short?

Factory exhaust systems are designed to meet noise regulations and long-term durability requirements, which can limit performance and sound. Common issues include:

  • Internal corrosion from heat and condensation.
  • Restrictive baffling reducing exhaust flow.
  • Fixed sound levels with no adaptability.
  • Valve or actuator wear in older switchable systems.
  • Limited performance compatibility with tuned engines.

Over time, standard silencers may lose efficiency, sound quality, or reliability.

Why Upgrade to Switchable Silencers / Mufflers?

Upgrading to a switchable exhaust system enhances both performance and versatility.

Upgrade Benefits:

  • Dual-mode exhaust sound at the press of a button.
  • Improved exhaust flow for better performance.
  • Sportier, more engaging exhaust note when desired.
  • Maintains comfort and compliance in quiet mode.
  • Ideal for road, touring, and spirited driving.

Whether OEM or aftermarket, switchable silencers offer flexibility without compromise.

Highlights

  • Porsche switchable silencer and muffler upgrades
  • Valve-controlled exhaust sound adjustment
  • OEM Porsche and premium aftermarket options
  • Improved performance, sound, and driving engagement
  • Compatible with factory systems and controls       

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