If you are looking to swap out your stock DVX 400 CDI box, the Big Gun Over 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.
- Increases overall RPM limit from 9,000 to 9,750
- Advanced timing curve
- Easy direct plug in replacement to stock CDI box
- 6 Month Limited Warranty