Big Gun Exhaust Honda CRF450R (02-03)

Description

Fits : Honda CRF450R (02-03)
If you are looking to swap out your stock CDI box, the Big Gun Over Rev Box is an affordable alternative to highly-priced OEM replacement boxes. It increases the overall RPM limit over the stock box and advances the timing curve.
Increases overall RPM limit
Advanced timing curve
Easy direct plug in replacement to stock CDI box