Need Sprockets? - CRF's Only offers sprockets and chains for the Honda CRF450X, CRF450R, CRF250X, CRF250R, CRF150R.
CRF450R Wide Ratio Transmission - CRF's Only offers wide-ratio transmissions for the CRF450R.
CRF's Only Motorcylce Gearing, RPM, MPH calculator for Honda CRF450R, CRF450X, CRF250R, CRF250X, CRF150R
* All credit for original programming goes to Rob Woods