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Pick your trim in My Garage — better matches across the catalog.
Exact-fit parts for the 2018 Subaru WRX STI Base.
This page groups parts listed for the 2018 Subaru WRX STI Base. Some products fit every trim, while others depend on submodel, engine, drivetrain, or brake package. Use your trim in My Garage or the product page fitment check to confirm exact fit.
We carry parts from trusted brands including R1 Concepts, DFC, Dynamic Friction, PowerStop, and EBC, plus many more. Filter by brand to find your preferred manufacturer.
Most in-stock items ship within 1-2 business days. Shipping rates are calculated at checkout based on your location.
Warranty coverage varies by manufacturer but typically ranges from 1 year to lifetime. Each product page includes specific warranty information from the manufacturer.
