Comp Cams 015 X 1.640 Spring Shim Apoc Industries this kit is designed with

this kit is designed with to fit multiple different steering configurations

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

and F-series race engines

professional-grade solution for your speaker upgrade

Comp Cams 015 X 1.640 Spring Shim Apoc Industries this kit is designed withSpring 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.