If you are looking to swap out the stock CDI box on your Suzuki DR-Z 400S, 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
- Advanced timing curve
- Easy direct plug in replacement to stock CDI box
- 6 Month Limited Warranty
* Must cut green wire on 8-prong plug *