Description
Valve shim selection directly impacts your engine’s valvetrain precision and longevity. PROX Valve Shims are heat-treated to maintain hardness under extreme operating conditions, reducing wear and maintaining exact clearances across extended engine life. Whether you’re dialing in a race engine or rebuilding a high-mileage platform, precision-machined shims are essential to consistent valve timing and performance.
- Heat-treated for durability
- Precision machined tolerances
- Reduced wear rate
- Exact size consistency
- 5-pack quantity
- OEM-equivalent specifications
- MPN: 29948120









