Valve Spring Kit 57-83 Xl 20-2210

Racing Valve Spring Kit

Designed for its specific application, taking into account several critical parameters including; cam profiles, harmonics, natural frequency of the springs, valvetrain mass, required pressure, wire stress, fatigue life, and engine rpm

Progressively wound springs using Kobe super-clean, chromium silicon(CrSi) based wire that is heat treated and shot peened

Complete set for one engine

Made in the USA

May require machining of valve guides for special seals. May require "R"-style valves to achieve correct install height. Kit Includes: • 4x CrSi Valve Springs • 4x H.T. Steel Retainers • 4x H.T. Steel Basewashers • 4x H.T Steel Keeper (Pairs)