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CARGRAPHIC GT Sport Exhaust System Backdate with ID45, without heating, for GT3 silencer. Porsche 964 Carrera 2/4/RS ❭ CARP64GTKITCOFLAPGT345
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
CARGRAPHIC GT Sport Exhaust System Backdate with ID45 GT manifold set, with / without 2x200cpsi catalytic converters, without heating with exhaust valves - to be used with OEM GT3 rear silencer.
Fits:
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
- Porsche 964 (911) RS 3.6L 1991-93
- Porsche 964 (911) RS 3.8L 1991-93
Product Description:
CARGRAPHIC GT Sport Exhaust System Backdate to be used with OEM GT3 rear silencer SS304L
Consisting Of:
- 2x CARGRAPHIC ID45 GT manifolds with ID45mm long tube primaries with spring loaded spliced RACING
- ATTENTION: Engine tin ware / cowling needs to be modified!
- CARGRAPHIC link pipe set with / without 2x200cpsi Ø110mm HF catalytic converters, without heating with integrated exhaust valves pressureless closed (PLC)
- Fitting kit
SOUND / SUPER SOUND EXPORT Version
NO DRONE OR RESONATION even in combination with other CARGRAPHIC exhaust components fitted.
Key Features & Benefits:
- CNC mandrel-bent pipework
- Fully made from SS304L lightweight stainless steel
- High performance components, dyno tested
- OE / factory heating system retains full functional
- Olive-/ Bandclamp- and sleeve connections enable easy installation and perfect adjustment
- Collector boxes and silencer inlet flanges positioned max to the outside to achieve max possible clearance to valve covers, because of heat radiation.
- Reinforced laser-cut brackets
- Reduced backpressure due to freer flowing
- Reduced operating temperature
- Maximized performance
- Improved throttle response, freer revving
- Improved enhanced acoustics with no drone, resonation or vibration
- New designed Ø2,5" / 63,50mm exhaust flaps are pressureless closed (PLC) which means the car will start quietly (whereas the ordinary version needs intake vacuum to close the flaps which always takes quite some time and can be annoying)
- With flaps closed the gases flow, via the bypass pipes, silenced through the final silencer, whereas with flaps open most of the gas stream flows freely through a second exit within the tailpipes.
- The sound is reminiscent of the famous and legendary RSR`s, simply breath taking!
- Model specific tuned sound still in keeping with the Marque
- Weight reduction
Why Choose This Exhaust System?
The original exhaust on older 964 models can be restrictive in flow, heavy, and produce a muted sound. Switching to this CARGRAPHIC system unlocks the engine’s full potential: better exhaust flow, sharper throttle response, more pronounced exhaust tone, and improved performance — all while retaining reliability and proper fitment. It’s an ideal upgrade for enthusiasts seeking classic 964 sound and performance without resorting to race-only systems.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
CARP64GTKITCOFLAPGT345
The product you are viewing cross references to these numbers
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12

The typical Porsche sound - powerful, robust, sporty. Better still, it can be further enhanced using this sports exhaust system. The sound varies with driving behavior, ranging from a robust out put during normal road driving to a distinctively more aggressive tone during performance use.
The mode of the sports exhaust system is selected using a button in the centre console, if this button is not already pre-fitted in your car you will need to order this with us by providing the chassis / VIN number when ordering.
The package includes:
- Tailpipes made of die cast aluminum.
- Two rear mufflers
- One Centre Muffler
- Exhaust straps clamps and wiring
Fits:
Porsche 997 MKII Carrera
Porsche 997 MKII Carrera S
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
99704420004
The product you are viewing cross references to these numbers
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12

DesignTek Valvetronic sports exhaust system gives smooth high torque feel to the wheels with the valves opened, +8HP/10 ft-lbs of torque to the wheels with the valves closed. 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.
Valvetronic
High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound
Switch opened: Perfect Racing Sports Sound
DesignTek X-Pipe (primary muffler bypass) deletes the stock primary muffler and saves 6.4 lbs. from the rear of the vehicle. With a fast air flow the X-pipe increases BHP and Toque.
Made from high quality T304 14-16 gauge stainless steel, C.N.C. mandrel bent. The X-Pipe (primary muffler bypass) gives a great exotic car sound and power by about 5 decibels.
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.
EXHAUSTKIT23
The product you are viewing cross references to these numbers
This kit is comprised of the following items:
- Porsche 997 MKII Carrera C2 3.6L 2009-12
- Porsche 997 MKII Carrera C4 3.6L 2009-12
- Porsche 997 MKII Carrera C2S 3.8L 2009-12
- Porsche 997 MKII Carrera C4S 3.8L 2009-12
Cars with sports exhaust will need to change the tail pipe. See the recommended tailpipe.

Fits:
Porsche 997 MKII
DesignTek Valvetronic sports exhaust system gives smooth 16Bhp/18 ft-lbs of torque to the wheels with the valves opened, +9HP/11 ft-lbs of torque to the wheels with the valves closed. 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.
This unique exhaust configures a dual-tone setup controlled by a key fob which you can switch on the fly. Direct replacement for the factory mufflers and will work with the stock primary pipe and cats or DesignTek primary bypass pipe.
High-Performance Rear Exhaust with sound switch:
● Push the sound-button between:
Switch closed: Deep Sports Turbo Sound
Switch opened: Perfect Racing Sports Sound
Superb sports car sound, throaty and deep with the valves opened, but docile with the valves closed. You can reuse your factory OEM Porsche tips or you can opt for DesignTek tail pipes
Please note the remote controlers do not come with batteries. You will have to source them at your own cost. The type is CR2025
Installation instructions for Valvetronic Mufflers CLICK HERE
Valve Controller Installation CLICK HERE
For Wiring Diagram please CLICK HERE
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
3606009717
The product you are viewing cross references to these numbers
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