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The COMP Cams 0.015" valve spring shim with a 1.640" outside diameter and 0.635" inside diameter helps equalize the installed height of valve springs for consistent valve timing and seating. Made from quality shim stock and heat-treated to withstand radical cam lobes, it is intended for valvetrain tuning where consistent spring installed height matters. Available individually or in matched kits.
COMP Cams Spring Shim .015 X 1.640
