Procom PE-C-MHXR/CRF-A Performance CDI Fits Honda XR / CRF Models PROCOM Performance CDI For: Honda XR50, XR70, XR80, XR100, CRF150F 03-05 CRF230F (All Years) increases the rev limit to 10,000 RPM. In addition, this unit offers a re-mapped timing curve which yields a noticeable increase to horsepower and torque over the stock CDI. This CDI box is a direct plug in replacement CDI. Simply locate and remove the stock CDI, and plug the Procom unit directly into the wiring harness, no modification needed. Suitable for stock and modified machines We cover all our PROCOM Performance CDIs with a full one year warranty.