Borla Catback Exhaust WRX (2011-2014) STI (2008-2014) Hatchback Volkswagen The Go Fast Bits Respons

The Go Fast Bits Respons blow-off/bypass valve system for WRX/STI/Forester is much more than simply a noise maker or a factory valve replacement

2" front and 1

Road-tested and fine-tuned by BILSTEIN specifically for your Mazda

370Z: Front -0

Borla Catback Exhaust WRX (2011-2014) STI (2008-2014) Hatchback Volkswagen The Go Fast Bits ResponsThe Borla catback exhaust for the WRX STI hatchback is a full stainless steel exhaust system that uses slip fittings for easy install and removal. The piping tapers to 2. 5" right before connecting to the downpipe for great fitment using stock or aftermarket downpipes. This system does not have any resonators and will be fairly loud, but not overly noisy and annoying. It will however net you some serious gains throughout the power band and improve