Race Exhaust System from Cargraphic for GT4 but also works for Boxter/Cayman S. In excellent condition.

X-Pipe and Carbon Tips are brand new. I bought it from a local club member, but had a 2nd thought and never installed it. 

Details from Cargraphic:

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This Lightweight racing exhaust as used in Grand Am Cayman Cup has been developed and tested to the highest standard
on the dyno.

The silencers are designed as absorptive silencers which reduce exhaust back pressure drastically. In combination with a pair of equal length long tube manifold set without integrated catalytic converters the result is beside more power and torque a better response characteristic. Further evidence of improvements made, are recognized through an enhanced accoustic and weight reduction. Strenghtened brackets as well as the olive- and slide system ensure an exact adjustment, which guarantees a stressless installation.

Developed for maximum flow the equal length long tube primaries merge through a racing style spliced collector
with spike and create the following further advantages:
- Reduced backpressure
- Reduced temperature
- Maximized performance
- Enhanced sound
- Weight reduction
- Lasercut machined stainless steel flanges for
  accurate plain fit

PERFORMANCE
+20kW(27PS) more power and 35Nm additional torque

The system includes:
1x Flex pipe set which allows maximum movement under
    heat and absorbs vibrations
    Ø 2.5" (63,5mm) pipe work
1x Lightweight race silencer set RACE-X with integrated
    2x89mm tailpipes
    Ø 2.5" (63,5mm) pipe work
1x Fitting kit pipework