Description
Valve shim clearance is critical to engine reliability and performance—get it wrong, and you’re risking bent valves, poor sealing, and costly damage. PROX Valve Shims are precision-machined to exact tolerances and heat-treated for superior hardness, ensuring consistent performance across extended engine cycles without degradation. Whether you’re fine-tuning a race engine or rebuilding a high-mileage build, these shims deliver the repeatability and durability your engine demands.
- Quantity: 5-pack
- Precision-machined construction
- Heat-treated for hardness
- Reduced wear characteristics
- Exact size tolerance
- MPN: 29.948275









