
The Brian Crower valve spring for Subaru EJ205 (WRX) and EJ257 (STi) applications is offered as a single replacement spring for valvetrain work. It’s specified to suit those EJ-series heads for camshaft swaps or spring service where matching spring fit and behavior matters. Use these springs when restoring proper valve control on WRX and STi EJ engines.
Brian Crower Subaru EJ205-WRX/EJ257-STi Single Valve Springs