AP Catback Exhausts

Exhaust System Kit

Agency Power has developed one of the best sounding and performing exhaust systems for the 2008 and up Subaru STI. The new muffler-less exhaust features all T304 stainless steel piping in 3inch diameter from the catalytic converter back. The piping is all hand polished featuring robotic TIG welding. The midpipe includes a resonator to assist in keeping that traditional boxxer engine sound with an exotic race tone touch that does not drone in the cabin. The 0.5 inch thick flanges offer a secure fit along with the factory placement exhaust hangers. The catback exhaust features a quad exit rolled stainless steel tips with the Agency Power logo. As tested on a Mustang all wheel drive dyno, the Agency Power catback exhaust made an impressive 20 all wheel horsepower and 20ft per lbs of torque. The exhausts are available for all 2008 and up Subaru STI's and 2011 up WRX. Note: Designed to fit Hatch only. Does not fit 08-10 WRX