KIBBLEWHITE Valve Spring Kit 80-80394

These high quality replacement springs have been designed to exceeds the OEM specifications by fitting precisely on the spring shoulder diameter of both the OEM retainers, and KPMI H.T. Steel retainers, This kit also includes H.T. Steel basewashers in order to achieve a precision fitment on the large end of our beehive spring which, better controls the lateral motion of the spring, ensuring longer life and less wear on the valvetrain components, KPMI has gone a step further and specified the latest in spring materials and processing, an extremely robust design that will last longer than anything currently on the market, Unique features of this spring include is beehive variable rate wind to reduce the chances of spring surge due to cam harmonics, Super-Clean Chrome Silicon wire with additional Vanadium and Nickel added, increased strength, and a gas nitrided and double shot peened finish, greater fatigue life