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more aggressive stance while maintaining a clean OEM-inspired fit
Easy Installation: With the PNP harness and direct replacement design
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Description: Steel Flywheel Stage 3+
we promise that’s not where the color came from
Comp Cams .030 X 1.640 Spring Shim Porsche 911 GT3 (991.2) more aggressive stance while maintainingSpring Shims: . 030" Thickness, 1. 640" O. D., . 635" I. D. These . 030" 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.