Manley Performance Valve spring and Retainer Kits take the guess work out of making your valvetrain race-ready. Engineered for maximum durability, stability, and precision in high-performance and racing applications, these chrome-silicon alloy springs provide exceptional fatigue resistance and high-tensile strength, ensuring consistent valve control at extreme RPMs. Save time and money with these kits, featuring premium springs, retainers, designed to handle aggressive aftermarket camshafts.
Includes matched Valve Springs, Retainers, and Locks (if part number ends in "K"). Spring Locators included in some applications.
Includes 7 Machined Valve Locks manufactured from the premium quality heat treated steel
Manley Subaru WRX/STi .490in Valve Spring and Retainer Kit (w/o Valve Locks) (16 each)
Heat treated aerospace grade titanium retainers CNC machined to exacting tolerances
Manley Valve Spring & Retainer Kit - Subaru WRX/STI - Valve Locks NOT Included
Max Lift: 0.510" - Spring: 22185-16 - Titanium Retainer: 23185-16
Designed to handle aftermarket camshafts and up to 10,000 RPM
Manley Sprng/Retnr Kit - Subaru WRX/STI - Locks NOT Included
Manley Sport Compatct Valve Spring and Retainer Kit
Engine Valve Spring Kit
WRX/STI Vlv Sprng Kit
Valve Spring Kit-SC
