Description
Valve shim clearance directly impacts engine timing, power delivery, and component longevity—making precision fitment non-negotiable for serious builders. PROX shims are heat-treated to resist wear and maintain exact tolerances through extended track use, eliminating the guesswork in valvetrain setup. Whether you’re dialing in a fresh build or refreshing an existing engine, these shims ensure your camshaft profile performs as designed.
- Quantity: 5-pack
- Material: Hardened steel
- Heat-treated for durability
- Precision machined tolerances
- MPN: 29.948145
- Universal fitment applications
- Minimizes valvetrain wear
- Bolt-on installation









