Big Gun 00-07 Honda XR 650R Rev Box 1997-gmc-k3500-sierra-sle-esi6798617 CNC Machined 6061-T6 Aluminum Pulley

CNC Machined 6061-T6 Aluminum Pulley

gear slips

Designed using modern technology to ensure optimal internal geometry

Prevents Performance Loss Under Extreme Work Conditions

Sport and Sport+ modes achieve the ultimate contrast in behavior when compared to comfort driving modes (valves closed)

Big Gun 00-07 Honda XR 650R Rev Box 1997-gmc-k3500-sierra-sle-esi6798617 CNC Machined 6061-T6 Aluminum PulleyIf you are looking to swap out the 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. Easy direct plug in replacement to stock CDI box Increases overall RPM limit 6 Month Limited Warranty Advanced timing curve