Kibblewhite Valve Spring Kit 0.480in Lift XL 1957-1983 Harley-Davidson

Description

Upgrade your Harley-Davidson XL engine with the Kibblewhite Lightweight Racing Valve Spring Kit, engineered for high-performance applications. Designed specifically for 1957-1983 XL models, this kit supports up to 0.480" lift and includes progressively wound springs made from premium Kobe super-clean chromium silicon alloy. Each kit contains 4 CrSi valve springs, 4 H.T. steel retainers, 4 H.T. steel basewashers, and 4 H.T. steel keeper pairs. Features include increased fatigue life, optimized pressure, and superior durability for racing and performance builds. Made in the USA.

Note: May require machining of valve guides for special seals and "R"-style valves for correct install height.