Big Gun Exhaust Rev Box CDI Unit for 2001-12 Yamaha TT-R125 models - 40-R29 2003 Yamaha YFM400 Big Bear 2005 Arctic Cat Z 570

2005 Arctic Cat Z 570 LX

Constructed of lightweight polypropylene

2002 Kawasaki VN800B Vulcan Classic

2004 Arctic-Cat F6 Firecat Sno Pro

2003 Yamaha TT600

Big Gun Exhaust Rev Box CDI Unit for 2001-12 Yamaha TT-R125 models - 40-R29 2003 Yamaha YFM400 Big Bear 2005 Arctic Cat Z 570Big 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.