Manley Subaru WRX/STI (EJ20/EJ25) 16pc Valve Springs (1.126/.640) (For use w/ 23185-16 Retainers)

Engineered for today’s high-revving sport compact engines, Manley valve springs deliver exceptional durability, precise control, and consistent performance. Manufactured from premium alloys and designed for demanding turbocharged and naturally aspirated applications, they ensure reliable valvetrain stability at elevated RPM and boost levels.

Manley Subaru WRX/STI (EJ20/EJ25) 16pc Valve Springs (1.126/.640) (For use w/ 23185-16 Retainers)

Revs up to 10,000 RPM with Manley titanium retainers

Designed to handle aftermarket camshafts

Manley Valve Spring, SPRING-SUBARU WRX

Manley Valve Spring, SUBARU WRX

Wound from super clean alloy

Single Conical Ovate Wire

Engine Valve Spring Kit

SPRING-SUBARU WRX

Valve Spring