Multiple U.S. Warehouse LocationsBroken ApexFree shipping on qualified orders over $100*
The Ferrea valve spring kit for Subaru WRX EJ20 endurance applications is a dual-spring set designed for prolonged high-load use. Built to replace factory springs, this endurance kit focuses on consistent valve control over extended runs, offering improved valvetrain stability for sustained track sessions or long-duration spirited driving where reliable valve motion matters.
Ferrea Subaru WRX EJ20 Endurance Dual Spring Kit
