Mishimoto is proud to release the Performance Cat-back for the 2015+ Subaru WRX/STI. The biggest complaint is the stock cat-back exhaust systems lack of aggressiveness. By installing the Mishimoto Performance Stainless Steel Cat-back, the exhaust system...

Invidia 2015+ WRX/STi 4 Door 80mm Single Outlet Full Titanium Cat-Back ExhaustThis Part Fits:YearMakeModelSubmodel2015-2016SubaruWRXBase2015-2016SubaruWRXLimited2015-2016SubaruWRXPremium2015-2016SubaruWRX STIBase2015SubaruWRX STILaunch...

Invidia 2009+ WRX/STi Sedan G5 Titan Titanium Cat-Back ExhaustThis Part Fits:YearMakeModelSubmodel2008-2014SubaruImprezaWRX2010-2014SubaruImprezaWRX Limited2009-2014SubaruImprezaWRX Premium2008-2014SubaruImprezaWRX STI2011-2014SubaruImprezaWRX STI...

Invidia 08-14 WRX/STi 4 Door 80mm Single Outlet Full Titanium Cat-Back ExhaustThis Part Fits:YearMakeModelSubmodel2008-2014SubaruImprezaWRX2010-2014SubaruImprezaWRX Limited2009-2014SubaruImprezaWRX Premium2008-2014SubaruImprezaWRX...

Invidia 02-07 WRX/STi 80mm Full Titanium Cat-back ExhaustThis Part Fits:YearMakeModelSubmodel2002-2007SubaruImprezaWRX2006-2007SubaruImprezaWRX Limited2004-2007SubaruImprezaWRX STI2007SubaruImprezaWRX STI Limited2006-2007SubaruImprezaWRX TR

The BORLA® sound of power. Its been described as asonic shot of adrenaline. An intoxicating concert ofsteel, gears and combustion that echoes from thespeedways, deserts and highways of the world.The sound of more victory laps than any otherbrand, the...

Borla Performance offers a quad-exit Cat-Back exhaust for the venerable 2008-2014 Subaru WRX STI. This race-inspired system (PN140312) checks all the boxes on every Subaru enthusiasts hit list, taking this flagship to an even higher realm, of performance...

This cat-back exhaust system is constructed of 3 IN - 2-1/2 IN mandrel-bent brushed finished 304 stainless steel tubing for maximum strength and durability. Finishing off this exhaust system are dual 4 IN diameter polished 304 stainless steel exhaust...

Skunk2's Universal Mufflers are designed for maximum flow and power, featuring the same high-quality specifications as our more comprehensive MegaPower Exhaust Systems. Each muffler is manufactured of T-304 stainless steel, robotically TIG welded for...

Invidia 15+ Subaru WRX/STI Single Q300 Rolled Stainless Steel Tip Cat-back ExhaustThis Part Fits:YearMakeModelSubmodel2015-2016SubaruWRXBase2015-2016SubaruWRXLimited2015-2016SubaruWRXPremium2015-2016SubaruWRX STIBase2015SubaruWRX STILaunch...

The Injen Performance Cat-Back Exhaust System for the 2015-2021 Subaru WRX and WRX STI was designed from the ground up to compliment the aggressive styling and blistering performance of these sporty sedans. Our custom dual muffler design hones the tone...

This BORLA Cat-Back system is designed specifically for the 2.4L engine in the WRX. The 3" diameter single exit Cat-Back system features Polyphonic Harmonizer technology which utilizes patented units that contain pipes of different diameters and lengths...

This BORLA Cat-Back system is tuned for performance and sound for the 2.4L engine in the WRX. Our S-Type sound level is designed to bring out the Subaru engine rumble and provides an aggressive sound without any drone. This system features 3.5" quad...

This BORLA Cat-Back system is tuned for performance and sound for the 2.4L engine in the WRX. Our S-Type sound level is designed to bring out the Subaru engine rumble and provides an aggressive sound without any drone. This system features 3.5" quad...

This BORLA Cat-Back system is tuned for performance and sound for both the 2.0L engine in the WRX and the 2.5L engine in the STI. Our S-Type sound level is designed to bring out the Subaru Boxer engine rumble and provides an aggressive sound without the...

The BORLA® sound of power. Its been described as asonic shot of adrenaline. An intoxicating concert ofsteel, gears and combustion that echoes from thespeedways, deserts and highways of the world.The sound of more victory laps than any otherbrand, the...

The BORLA® sound of power. Its been described as asonic shot of adrenaline. An intoxicating concert ofsteel, gears and combustion that echoes from thespeedways, deserts and highways of the world.The sound of more victory laps than any otherbrand, the...

This cat-back exhaust system is constructed of 3 IN - 2-1/2 IN mandrel-bent brushed finished 304 stainless steel tubing for maximum strength and durability.Finishing off this exhaust system are dual 4 IN diameter black 304 stainless steel exhaust tips...

aFe is proud to introduce an all new Takeda dual cat-back exhaust system for the 2015-2020 Subaru WRX and WRX STI with the H4-2.0L/2.5L (t) engines. This performance cat-back exhaust system is constructed out of 3" into dual 2-1/4" mandrel-bent 304...

This Takeda dual cat-back exhaust system for the 2015 - 2020 Subaru WRX and WRX STI delivers true bolt-on performance with gains up to +14 horsepower and +22 lbs. x ft. of torque as measured on our in-house dyno. 3" into 2-1/4" mandrel-bent 304 stainless...