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- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08

DesignTek Valvetronic sports exhaust system gives smooth and high torque feel to the wheels with the valves opened, Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fibre and stainless steel wool packed free flow mufflers. If you have a factory Porsche PSE (Porsche sport exhaust) this system can replace the original exhaust boxes, you will be able to use the original switches in your car
NOTE: Sports catalytic converters and bypass pipes do not have type approval and are not legally permitted for use on vehicles manufactured after 1st March 2001 in the United Kingdom. They are not MOT compliant and must not be used on public roads. These components are intended for race and track use only. If you are located outside the UK, please consult your local laws and regulations to ensure compliance.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
EXHAUSTKIT29
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
Fits
Porsche 997.1 Carrera 2 3.6L 2005 - 2008
Porsche 997.1 Carrera 2S 3.8L 2005 - 2008
Porsche 997.1 Carrera 4 3.6L 2005 - 2008
Porsche 997.1 Carrera 4S 3.8L 2005 - 2008
DesignTek sports exhaust system gives smooth Bhp & Torque. Made from high quality 14-16 gauge T304 stainless steel, hydro-formed muffler cases, radiuses stressed relieved with 2000 degree ceramic fiber and stainless steel wool packed free flow mufflers.
DesignTek X-pipe sports racing catalytic converters give a HORSEPOWER and TORQUE gain to all 997 cars. High Quality T304 SS C.N.C. mandrel bent tubing for maximum exhaust flow.
The Equal length headers reduced backpressure and less restriction.
This kit is comprised of the following items:
- Porsche Boxster 987 2.7L 2005 -08/08
- Porsche Boxster 987 S 3.2/3.4L 2005-08/08
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
- Porsche Cayman 2.7L 987C 2006-08
- Porsche Cayman S 3.4L 987C 2005-08
This is the switch required for the original Porsche sport exhaust system our part number code 99994420103
Fits:
For cars WITHOUT "PASM" electronic damper control
Porsche 997 MKI Carrera
Porsche 997 MKI Carrera S
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761312900FMH
The product you are viewing cross references to these numbers
- Porsche 997 MK1 Carrera 2 3.6L 2005-08
- Porsche 997 MK1 Carrera 2S 3.8L 2005-08
- Porsche 997 MK1 Carrera 4 3.6L 2005-08
- Porsche 997 MK1 Carrera 4S 3.8L 2005-08
This is the switch required for the original Porsche sport exhaust system our part number code 99994420103
Fits:
Cars WITH "PASM" electronic damper control
Porsche 997 MKI Carrera
Porsche 997 MKI Carrera S
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99761313100FMH
The product you are viewing cross references to these numbers
Porsche Performance Exhaust Packages - Power, Sound & Flow Upgrades
Exhaust Packages are complete performance exhaust solutions designed to improve exhaust gas flow, enhance engine efficiency, and transform the sound of your Porsche. By upgrading restrictive factory components with high-flow systems, exhaust packages help reduce backpressure, improve throttle response, and unlock additional performance—especially in tuned or performance-driven engines.
Available from Design911, Porsche exhaust packages combine precision-engineered components such as headers, sports catalysts, silencers, and tailpipes to deliver a balanced upgrade in power, sound, and durability.
What Do Exhaust Packages Do?
Exhaust packages manage the efficient removal of exhaust gases from the engine.
Core Functions:
- Reduce exhaust backpressure for improved engine breathing.
- Enhance power delivery and throttle response.
- Improve exhaust sound and tone.
- Optimise exhaust flow across the RPM range.
- Support tuning and performance modifications.
Efficient exhaust flow is essential for maximising engine performance and responsiveness.
Why Do Standard Exhaust Systems Fail?
Factory exhaust systems are designed for noise control,
emissions, and cost, which can lead to performance and durability limitations.
Common issues include:
- Restrictive pipework limiting airflow.
- Internal corrosion from heat and moisture.
- Catalyst degradation over time.
- Excessive weight reducing performance efficiency.
- Incompatibility with performance tuning upgrades.
Failing exhaust components can cause power loss, rattles, leaks, and reduced engine efficiency.
Why Upgrade to a Performance Exhaust Package?
Performance exhaust packages are engineered to improve flow, sound, and reliability.
Upgrade Benefits:
- Increased power and improved throttle response.
- Reduced system weight for better performance.
- Enhanced exhaust sound without excessive drone.
- Improved durability using stainless steel or motorsport materials.
- Ideal foundation for further engine tuning.
Upgrading the exhaust system unlocks performance potential while enhancing driving enjoyment.
Highlights
- Porsche performance exhaust package upgrades
- Improved exhaust flow and power delivery
- Enhanced sound quality and tone
- Designed for tuned and performance engines
- High-quality materials for long-term durability