Turbo XS Downpipe Catted Bellmouth WRX (2008-2014) STI (2008-2018) Nissan Injen has invested tireless efforts

Injen has invested tireless efforts as well as dyno-testing to design an intake system that produces gains in both horsepower

this exhaust system is the first step in your BMW 335i power modifications

the back of the car will break loose much more predictably

All Competition Clutch Kits Include:

2004-2018 STI

Turbo XS Downpipe Catted Bellmouth WRX (2008-2014) STI (2008-2018) Nissan Injen has invested tireless effortsTurboXS downpipe with high flow catalytic converter for the Subaru WRX and STI uses a massive cast 304 Stainless Steel Bellmouth that tapers to 3. 0" piping where it connects to the mid pipe. Features: Two piece design Delete the catalytic converter without having to buy a whole new downpipe (Catless Race Pipe WS08 RP V2 sold separately) Easier installation Cast 304 Stainless Steel Bellmouth upper section for maximum exhaust gas flow 3. 5 inch