Looking for aftermarket parts to modify or upgrade your Subaru WRX STI with exhaust adapters? At Tunersports.com we carry a huge selection of the top name brand performance exhaust adapter 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 8 exhaust adapters available to mod your WRX STI. All parts have free shipping to the Continental US 48 States.
 IN STOCK MMEXH-ADAP-3DSEDon't let a pesky exhaust leak ruin the beautiful exhaust tone from your turbo Subaru. The Mishimoto Subaru Exhaust Adapter allows a smooth exhaust flow transition between your 3" downpipe and stock sized exhaust. The engineers at Mishimoto know your Subaru was built for harsh climates, so they desi... Mishimoto Subaru Exhaust Adapter 3 Downpipe to Stock 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 $72.00 |
 IN STOCK MMEXH-ADAP-SDAEDon't let a pesky exhaust leak ruin the beautiful exhaust tone from your turbo Subaru. The Mishimoto Subaru Exhaust Adapter allows a smooth exhaust flow transition between your stock downpipe and your 3" sized exhaust. The engineers at Mishimoto know your Subaru was built for harsh climates, so they... Mishimoto Subaru Exhaust Adapter, Stock Downpipe to 3in 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 $72.00 |
 IN STOCK TS-SU-479Torque Solution Subaru Stock Downpipe to 3in Aftermarket 3in Catback Exhaust Adapter 2015-2015 Subaru WRX STI Launch Edition 2015-2020 Subaru WRX STI Base / Limited 2016-2016 Subaru WRX STI Series.HyperBlue $64.77 |
 IN STOCK TS-SU-480Torque Solution Subaru 3in Aftermarkert Downpipe To OEM Catback Exhaust Adapter 2015-2015 Subaru WRX STI Launch Edition 2015-2020 Subaru WRX STI Base / Limited 2016-2016 Subaru WRX STI Series.HyperBlue $64.77 |
 IN STOCK ADA-3DP-OEMCBThe TurboXS 3 inch Downpipe to Stock Cat-back Adapter is designed to adapter your 3 inch downpipe to the donut style flange of your 2.5 inch OEM Catback. Made from Stainless Steel this part will be durable and make sure you don't have any exhaust leaks with your 3 inch downpipe.... Turbo XS Subaru WRX/STi 3in Downpipe to OEM Cat-Back Adapter w/Standard Exhaust Gasket 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 $61.81 |
 IN STOCK ADA-3DP-OEMCB-1The TurboXS Subaru WRX/STi 3" Downpipe to OEM Catback Adapter is the perfect solution when trying to mate a 3" Downpipe to the OEM catback exhaust system. 304 Stainless Steel. Includes 2X Thick Multilayered Stainless Steel Exhaust Gasket.... Turbo XS Subaru 3in Downpipe to OEM Cat-Back Adapter w/Stainless Steel Exhaust Gasket 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 $80.67 |
 IN STOCK ADA-OEMDP-3CBThe TurboXS Stock Downpipe to 3 inch Catback Adapter is the perfect part to mate with your 3 inch Catback if you are using the stock downpipe. This part allows use of the OEM Donut Gasket with your 3 inch flat flange gasket found on the 3 inch Catback without having an exhaust leak. Made from 304 St... Turbo XS Subaru WRX/STI OEM Downpipe to 3in Cat-Back Adapter w/Standard Exhaust Gasket 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 $49.24 |
 IN STOCK ADA-OEMDP-3CB-1The TurboXS Subaru OEM Downpipe to 3" Catback Adapter is the perfect solution when trying to mate an OEM Downpipe to a 3" Catback Exhaust System. Made from 304 Stainless Steel for superior corrosion resistance, this kit Multilayered 304 Stainless Steel Exhaust Gasket. FEATURES: Adapter plate machine... Turbo XS Subaru OEM Downpipe to 3in Cat-Back Adapter w/Stainless Steel Exhaust Gasket 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 $61.81 |