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This COMP Cams shim kit includes 16 each of .015", .030" and .060" thick shims in 1.640" outside diameter with a .635"–.650" inside diameter range to equalize installed valve spring heights. Constructed from high-quality shim stock and heat treated to resist radical cam lobes, the kit gives a broad set of thicknesses for accurate spring seating and consistent valve-train geometry during engine builds.
COMP Cams Spring Shim Kit 1.640
