The Mishimoto 2015+ Subaru WRX/STI four-piece designed cat-back exhaust allows the entire system to breathe easier, providing horsepower, torque, and a rich exhaust tone out of the precision TIG-welded 304 stainless steel piping. After comparing many different muffler sizes and designs, Mishimoto engineers chose oval mufflers to help prevent highway drone but still provide an aggressive exhaust tone. Mishimoto saw gains of up to 9 whp and 8 wtq using 93 octane fuel while maintaining safe AFRs on a stock tuned CVT WRX. This exhaust installs in under one hour and features quad 3.5" staggered, double wall polished tips. The Mishimoto 2015-16 WRX/STI cat-back exhaust provides an extremely aggressive turbo and exhaust tone under acceleration and boost, giving you that loud head turning tone you've been looking for!
Mishimoto spent countless hours engineering a smooth exhaust flow from the 3.0" 2-bolt exhaust flange all the way through the 2.25" Y-section. To top it off, this cat-back includes two 2.25" V-band clamps, a 3" exhaust-band clamp, a new 3" 2-bolt flange gasket, and all stainless steel hardware, so you don't have to worry about rusty hardware. For 2015-16 WRX or STI owners looking to get the most out of their vehicle, this cat-back exhaust mates perfectly with the Mishimoto Subaru WRX Performance Downpipe.