This Camshaft Kit is Drop-In, no shims or springs are needed. (See **Note)
* Cam timing should be set by a qualified mechanic to ensure proper function. Improper installation or cam timing could result in catastrophic engine failure.
**Note: For the 2010 Honda CRF450R, these two Honda OEM parts are required. (Sold Separately through Authorized Honda Supplier)
Vehicle Fitment: