Big Gun Exhaust Rev Box CDI Unit for 2004-07 Honda CRF450R - 40-R16 2003 Yamaha GP1200R (1) Chrome front head shield

(1) Chrome front head shield

2005 Arctic Cat F5 Firecat

for an aggressive and classic design at the rear

2003 Polaris Indy Frontier Touring

2011 Ski-Doo Summit 800R Everest w/163" track

Big Gun Exhaust Rev Box CDI Unit for 2004-07 Honda CRF450R - 40-R16 2003 Yamaha GP1200R (1) Chrome front head shieldBig 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.