Description
Valve shim clearance directly impacts engine efficiency, combustion timing, and longevity—especially critical for high-revving CRF450R builds. This 5-pack of precision-engineered shims lets you fine-tune valve clearances without sourcing individual replacements, keeping your engine dialed in across seasons and rebuild cycles. Whether you’re chasing lap times or maintaining peak reliability, having quality shims on hand eliminates downtime.
- Dimension: 9.48mm × 2.65mm
- Fitment: Honda CRF450R 2002–2023
- Quantity: 5-pack refills
- Material: Precision-engineered steel
- Installation: Bolt-on replacement
- Purpose: Valve clearance adjustment
- MPN: 5PK948265






