Description
Valve shim wear directly impacts cylinder head performance and engine reliability—these precision-machined shims maintain exact valve clearances without the cost of OEM replacements. PROX shims are heat-treated to maximize hardness and durability, reducing wear cycles and extending service life between adjustments. Whether you’re maintaining a race engine or refreshing a street build, these shims deliver consistent performance at a fraction of the price.
- Quantity: 5-pack
- MPN: 29.748305
- Heat-treated hardness
- Precision CNC-machined
- OEM replacement quality
- Reduced wear rate
- Cost-effective maintenance
- Universal fitment compatible









