Porsche 997 NHP Cat-Bypass Pipes X-Pipe Design
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NHP Exhaust Cat-Bypass Pipes X-Pipe Design for the Porsche 997, this will fit all 997 Models C2, C2S, C4, C4S. The X-Pipe design will produce a deeper exhaust tone compared to the crossover pipes and will produce most of its power on the higher RPM band.
Read more below for our extended description.
BRAND: NHP EXHAUST
WARRANTY: LIFETIME AGAINST DEFECTS
We have also designed this X-Pipe with one adjustable flange, this design allows this X-pipe to be installed with any aftermarket headers without fitment issues. The reason is that we built our parts according to the factory mounting points, sometimes aftermarket parts may have slight different angles and may cause problems when fitting other exhaust parts, with our adjustable flange its a perfect fit all the time regardless of the brand for the rest of the exhaust system.
Gaskets and Hardware included.
OPTIONAL, if your factory sleeve clamps that connect the catalytic converters to the mufflers appear to be very rusted and may need replacement take a look at our sleeve clamps. They are made of Stainless Steel and will last you a lifetime, don't pay more elsewhere get the best here.
For the State of California our Exhaust Products are not C.A.R.B.
Our Exhaust products have no guarantees about passing emissions in your state.
Our High Performance Exhaust with sports catalytic converters and cat-bypass exhausts are built and meant for off-road purposes.
Our Exhaust Products “Lifetime Warranty” does not cover catalytic converter error codes.
Please note that due to the deletion of your catalytic converter you will encounter a check engine light. You may want to flash your ECU to avoid that or install a 02 Sensor bung to help eliminate the possibility of a check engine light.