BIG GUN - REV BOX - ATV/UTV - YAMAHA

Increases overall RPM limit

Advanced timing curve

Easy direct plug in replacement to stock CDI box

6 Month Limited Warranty

Expertly crafted from premium materials

Quality design and workmanship

Durable construction for long service

Rev Box by Big Gun®. If you are looking to swap out your stock 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.

Manufacturer Part #: 40-R05B

Prop 65 WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or reproductive harm. For more information go to www.P65Warnings.ca.gov.