Big Gun Exhaust Rev Box CDI Unit for 1993-06 Honda TRX300EX FourTrax - 40-R18 1995 Honda XR650 2009 Polaris Ranger 500 2x4

2009 Polaris Ranger 500 2x4

2006 Arctic Cat Sabrecat 700 EXT (EFI) 144"

2003 Suzuki DR-Z400K

Note: Kits are based on using 2-inch risers with ape hanger-style handlebars

2017 Yamaha YZ250

Big Gun Exhaust Rev Box CDI Unit for 1993-06 Honda TRX300EX FourTrax - 40-R18 1995 Honda XR650 2009 Polaris Ranger 500 2x4Big 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.