Fits CRF150F ('03-'05) and CRF230F ('03-Present). Eliminates the 9800 rpm rev limiter and provides a hotter advance curve.
• Eliminates the 9800 rpm rev-limiter of the OEM ignition
• Direct replacement for the OEM CDI ignition box
• Hotter advance curve
• A must have for your CRF150F or CRF230F
If you have a '06-Present CRF150F use 451-HCF-1502