Description
Valve shim wear directly impacts your engine’s compression ratio, valve clearance, and overall performance consistency. These PROX shims maintain precise tolerances through repeated thermal cycles, eliminating the performance drift that comes with inferior alternatives. If you’re chasing reliability in a high-revving build, precision-machined shims are non-negotiable.
- Quantity: 5-pack
- Precision CNC-machined
- Heat-treated for hardness
- Reduced wear characteristics
- Exact size tolerance
- MPN: 29.948260
- Fits: Check fitment guide
- Installation: Requires shim adjustment









