Invidia Catless Test Pipe Integra GSR (1994-1999) Wheels Perrin's pulley is not underdriven

Perrin's pulley is not underdriven and will not affect the life of your engine

Includes: Disc

The AVO Power Air system for the 2002-2007 Subaru WRX and STI is an easy to fit bolt-on item that helps the engine breath deeper

Flywheel tooth count: 124

Invidia Catless Test Pipe Integra GSR (1994-1999) Wheels Perrin's pulley is not underdrivenRemoving restriction from your exhaust system is the key to added performance. Increasing piping size effectively does this, but with the stock catalytic converter in place you are still loosing horsepower. Invidia eliminated this with their catless test pipe. The test pipes are 60mm and are constructed of stainless steel. These pieces will finish off your exhaust system nicely and free up every last bit of power from your motor. Picture is for