2015+ SUBARU WRX/STI

The best parts for a 2015+ WRX or STI are the ones that match how you drive: daily-driver comfort, sharper handling, or more power. This collection brings together thousands of aftermarket parts for the VA-chassis 2015+ WRX and 2015-2021 STI — wheels, gauges, suspension, drivetrain, and styling upgrades — so you can shop your whole build in one place.

The 2015 redesign moved the WRX to the FA20DIT turbo engine while the STI kept its EJ257 through 2021, so engine and drivetrain parts often differ between the two even though they share a chassis. When shopping, look for quality materials, proven brands, and fitment notes that match your exact year and trim. Universal-fit parts like gauges, bushings, and wheels work across many cars, but always confirm specs before ordering. To narrow things down, browse our 2015-2021 WRX/STI parts, the Subaru WRX 2018-2021 collection, or New WRX/STI arrivals.

Popular brands here include Advan wheels, COBB Tuning drivetrain upgrades, AutoMeter gauges, Prothane bushings, and Toyo tires.

Popular picks from this collection include the Advan RS-DF 19x9 wheel and the COBB weighted shift knob for 02-26 WRX and 04-21 STI, plus AutoMeter gauges and Prothane bushings for universal-fit upgrades. Still deciding between the two cars? Read our Subaru WRX vs STI comparison on the blog.

Will 2015+ WRX parts fit my STI?

Not always. The WRX uses the FA20DIT engine while the 2015-2021 STI uses the EJ257, so engine and drivetrain parts rarely cross over. Many exterior and interior parts do fit both, but always check your year and model on each listing.

Do I need a tune for basic bolt-ons?

Some mods do and some don't. Intake and downpipe upgrades on these turbo engines generally require tuning to run safely, while cat-back exhausts and suspension parts usually don't. When in doubt, budget for a tune.

Are universal-fit parts safe for my WRX/STI?

Many are — gauges, bushings, and wheels with the right specs work great — but confirm dimensions, thread pitch, and bolt pattern before ordering.

What changed on the 2018+ WRX vs 2015-2017?

The 2018 refresh brought minor body and trim updates; most mechanical parts are shared across 2015-2021. Still, check your year and model on every part to be sure.