745140 10PCK Valve Spring Shim 1 437X 645X 060

Kibblewhite Precision Machining valve spring spacing shims are fundamental tools for ensuring the correct assembly of motorcycle cylinder heads. These shims are used to compensate for variations in valve spring installed height, which can occur during routine valve maintenance or custom engine builds. Achieving the correct height is paramount for preventing premature spring fatigue and ensuring the valves operate correctly within their designed parameters. Known for their precision and durability, Kibblewhite shims are a trusted choice for workshops and engine specialists. They provide the necessary adjustment capability to maintain optimal valvetrain performance and longevity in demanding V-Twin applications.