Looking for aftermarket parts to modify or upgrade your Subaru WRX STI with catback? At Tunersports.com we carry a huge selection of the top name brand performance catback parts and accessories for your WRX STI.
Whether you have a 2015 or 2021 Subaru WRX STI in Base to Type RA trim we have you covered. We have 30 catback available to mod your WRX STI. All parts have free shipping to the Continental US 48 States.
 IN STOCK HS15SW4G3SThe Invidia Q300 Exhaust features a flat bottom shaped muffler design results in improved high speed aerodynamic performance. The muffler inside contains continuous piping design and use of Advantex material that results in an excellent free-flow exhaust with optimized back pressure, giving greater ... Invidia 15+ Subaru WRX/STI Single Q300 Rolled Stainless Steel Tip Cat-back Exhaust 2015-2015 Subaru WRX STI Launch Edition 2015-2016 Subaru WRX STI Base / Limited 2016-2016 Subaru WRX STI Series.HyperBlue $723.36 SALE |
 IN STOCK HS15STIG3TThe Invidia Q300 Exhaust features a flat bottom shaped muffler design results in improved high speed aerodynamic performance. The muffler inside contains continuous piping design and use of Advantex material that results in an excellent free-flow exhaust with optimized back pressure, giving greater ... Invidia 15+ Subaru WRX/STI 4Dr Q300 Twin Outlet Rolled Titanium Burnt Quad Tip Cat-Back Exhaust 2015-2015 Subaru WRX STI Launch Edition 2015-2016 Subaru WRX STI Base / Limited 2016-2016 Subaru WRX STI Series.HyperBlue $1,136.78 SALE |
 IN STOCK HS15SW4TRGInvidia 2015+ WRX/STi 4 Door 80mm Single Outlet Full Titanium Cat-Back Exhaust
... Invidia 2015+ WRX/STi 4 Door 80mm Single Outlet Full Titanium Cat-Back Exhaust 2015-2015 Subaru WRX STI Launch Edition 2015-2016 Subaru WRX STI Base / Limited 2016-2016 Subaru WRX STI Series.HyperBlue $1,468.83 SALE |
 IN STOCK - LOW 19361The MagnaFlow Competition Series Exhaust Systems are designed for those seeking maximum performance, reduced mass and an aggressive exhaust note that demands attention. A High Temp Satin Black Coating provides an aggressive unique style and added protection. These systems may not comply with all loc... MagnaFlow SYS Cat-Back 15-17 Subaru WRX Sti 2.5L Polished 3in Tips 2015-2015 Subaru WRX STI Launch Edition 2015-2020 Subaru WRX STI Base / Limited 2016-2016 Subaru WRX STI Series.HyperBlue 2018-2018 Subaru WRX STI Type RA $1,264.00 |
 IN STOCK MMEXH-WRX-15Mishimoto 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 is able to breathe easier, providing horsepowe... Mishimoto 2015 Subaru WRX 3in Stainless Steel Cat-Back Exhaust 2015-2015 Subaru WRX STI Launch Edition 2015-2021 Subaru WRX STI Base / Limited 2016-2016 Subaru WRX STI Series.HyperBlue 2018-2018 Subaru WRX STI Type RA 2020-2020 Subaru WRX STI S209 $1,159.95 |