ETS Catback Exhaust Midpipe for 2015-2021 WRX STMKIT They feature male AN /

They feature male AN / 37° Flared fitting end caps

excessive fuel) can cause a loss in power

These valves are made from billet aluminum and the atmospheric design expels the air straight to atmosphere giving you that "whoosh" when you let off the throttle

making room for larger exhaust manifolds

AEM’s Wideband Controllers with X-Series digital technology can reduce deadtime and improve the performance of your vehicle through more accurate AFR tuning

ETS Catback Exhaust Midpipe for 2015-2021 WRX STMKIT They feature male AN /ETS replacement midpipe for the ETS 2015 2021 Subaru WRX catback exhaust. If you'd like to switch up your exhaust setup and add or delete the inline resonator, you can purchase just this piece. Vehicle Fitment: 2015 2021 Subaru WRX See more ETS Products