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The COMP Cams 0.030" valve spring shims with a 1.640" outside diameter and 0.635" inside diameter help equalize installed spring heights for steady valvetrain operation. Heat-treated from high-quality shim stock to resist aggressive cam lobe wear, they maintain consistent spring seat height during demanding use. Offered individually or in matched kits for multi-cylinder work.
COMP Cams Spring Shims .030 X 1.640
