Comp Cams 015 X 1.640 Spring Shim Apoc Industries Belltech's spring distance 'lift spacers"

Belltech's spring distance 'lift spacers" are designed with spring contours to dissipate the spring load evenly over the whole spacer surface

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Comp Cams 015 X 1.640 Spring Shim Apoc Industries Belltech's spring distance 'lift spacers"Spring Shims: . 015" Thickness, 1. 640" O. D., . 635" I. D. These . 015" thick Valve Spring Shims with 1. 640" outside diameter and . 635" inside diameter are used to equalize the installed height of valve springs. Made from the highest quality shim stock, these shims are heat treated to stand up to radical cam lobes. Kits are also available.