Upgrade your Subaru’s engine performance with the Manley Performance Valve Spring and Retainer Kit, engineered for 2002-2014 WRX, 2004-2014 Subaru WRX STI, 2005-2012 Legacy GT, and 2004-2013 Forester XT models. This premium kit is designed to support high-lift cams and push beyond OEM rev limits, delivering enhanced durability and reliability for aggressive driving and built motors.

Crafted from high-grade steel, these valve springs and retainers provide a maximum net lift of 0.510”, ensuring consistent performance at sustained high RPM without valve float or failure. Ideal for enthusiasts upgrading cams, turbos, or ported heads, this kit handles the demands of drag racing, time trialing, and spirited street driving with confidence.

Perfect for Subaru owners seeking to maximize engine potential, the Manley kit offers a trusted solution to elevate your vehicle’s power and responsiveness. Shop this top-quality valve spring and retainer kit at Subimods and take your Subaru’s performance to the next level.