Big Gun Exhaust Rev Box CDI Unit for 1993-06 Honda TRX300EX FourTrax - 40-R18 2005 Yamaha XV1600 Road Star Cobra USA Quiet Core Muffler

Cobra USA Quiet Core Muffler Baffle

2009-10 Husaberg FE 570E

2006 Harley-Davidson Sportster 883 - XL883

2011-13 Yamaha FZ8

Big Gun Exhaust Rev Box CDI Unit for 1993-06 Honda TRX300EX FourTrax - 40-R18 2005 Yamaha XV1600 Road Star Cobra USA Quiet Core MufflerBig 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.