Brian Crower Single Valve Springs for Subaru EJ205-WRX/EJ257-STi

Brian Crower Single Valve Springs for Subaru EJ205-WRX / EJ257-STi Upgrade your Subaru's valvetrain with Brian Crower single valve springs designed specifically for the EJ205 (WRX) and EJ257 (STi) engines. Engineered for reliable performance, these springs deliver consistent seat pressure, improved durability, and precise control at high RPM. Application: Direct fit for Subaru EJ205 (WRX) and EJ257 (STi) engines Performance: Optimized for high-RPM stability and reduced valve float under aggressive driving and tuning Construction: High-quality alloy steel with precision winding and shot-peened finish for increased fatigue life Benefits: Improved valve control, enhanced throttle response, and greater confidence for track or street performance Compatibility: Ideal for stock to moderately upgraded cams; pair with matching retainers and locks as recommended Whether you're building a tuned street car or a dedicated track machine, Brian Crower single valve springs are a trusted choice to help your Subaru's cylinder head perform reliably under higher lift and RPM conditions.