Big Gun Exhaust Rev Box CDI Unit for Honda XR50R / XR70R / XR100R / CRF50F / CRF70F / CRF80F CRF100F / CRF150F / CRF230F - 40-R03 1989 Kawasaki KLF300C Bayou 4x4 Four mesh windows for viewing

Four mesh windows for viewing and optimum ventilation

2003 Honda CB1100

2014 - 18 YFM 700 Viking 4x4 - ( Parking Brake)

1975 Kawasaki G5100

91mm Piston Size Added 0

Big Gun Exhaust Rev Box CDI Unit for Honda XR50R / XR70R / XR100R / CRF50F / CRF70F / CRF80F CRF100F / CRF150F / CRF230F - 40-R03 1989 Kawasaki KLF300C Bayou 4x4 Four mesh windows for viewingBig Gun Exhaust Rev Box CDI Unit Increases overall RPM limit Advanced timing curve Easy direct plug in replacement to stock CDI box 6 month Limited Warranty If you are looking to swap out your stock CDI box, the Big Gun 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. The Big Gun Rev Box is offered for various offroad MX and ATV models.