For off-road use only. Remove your catalytic converter and run this straight pipe either back through the rest of your exhaust of straight out for extra horsepower at the track. Three part numbers to choose from. One bolts up to the stock exhaust manifolds and stock or 2.5" cat-back system, a 3" that bolts up to the down pipe of headers and a 3" that bolts up to the stock downpipe. O2 bung is welded in for your O2 sensor and includes hanger. You'll need an O2 Simulator (no longer available) to avoid setting an SES light.

2004-2008 Grand Prix Owners: A O2 Sensor extension harness required for 2004-2008 Grand Prix owners (excludes GXP). Please select the harness from the options below only if you own a 2004-2008 Grand Prix (excluding the GXP).

Select options below as follows
• 2.5" outlet - fits stock exhaust and 2.5" cat-back exhaust systems
• 3" outlet for stock downpipe - fits stock downpipe and 3" cat-back exhaust systems
• 3" outlet for headers - fits downpipe of cars with TOG headers installed