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Ships within 48 hours · Estimated delivery Aug 5 - Aug 10
2017 Yamaha YZ250
2012 Triumph Speedmaster 865
2009 Polaris Ranger 500 2x4
1984 Harley-Davidson Sportster - XLX 1000
Big Gun Exhaust Rev Box CDI Unit for 1993-06 Honda TRX300EX FourTrax - 40-R18 1995 Honda XR650 2017 Yamaha YZ250Big 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.
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