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- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11

DesignTek® exhausts are built for the sound and performance to enhance your Porsche 997 GT3. This kit includes Cat-back with valves, Manifolds and Matt black chromed tail pipes
Fits:
Porsche 997 GT3 / GT3RS 2007>>
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606609716
The product you are viewing cross references to these numbers
- Porsche 997 MK1 GT3 2007-09
- Porsche 997 MKII GT3 2010-11
- Porsche 991.1 GT3 3.8L (475Bhp) 2014-16
- Porsche 991.1 GT3 RS 4.0L (500Bhp) 2015-16
- Porsche 991.2 GT3 4.0L (500 Bhp) / GT3 RS 4.0L (520 Bhp) 2017-19
Replaces rear side silencers with straight pipes

Fits:
Porsche 911 GT3 and GT3 RS (997 Gen 1 and Gen 2)
Porsche 911 GT3 and GT3 RS (991.1 and 991.2 upto 2019)
This product can be mounted on every GT3, GTR RS, GT3 RS 4.0 versions, both on 997 Gen 1, Gen 2 and on 991.1 and 991.2 up to 2019
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
SOUND - STRAIGHT PIPE
The straight pipe version guarantees a direct path from the engine, removing all factors which may affect the acoustic tuning
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
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 in mm of the main pipe of the exhaust system
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