Spring Shims: .015” Thickness, 1.300: O.D., .520” I.D.

These .015" thick Valve Spring Shims with 1.350" outside diameter and .520" inside diameter are used to equalize the installed height of valve springs in GM LS engines. Made from the highest quality shim stock, these shims are heat treated to stand up to radical cam lobes. Also available in kits of 100