Big Gun Exhaust Rev Box CDI Unit for 2004-07 Honda CRF450R - 40-R16 2003 Yamaha GP1200R This means that tractive and

This means that tractive and impact forces are no longer diverted along a zig-zag path like an accordion

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Big Gun Exhaust Rev Box CDI Unit for 2004-07 Honda CRF450R - 40-R16 2003 Yamaha GP1200R This means that tractive andBig 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.