Rev Box Big Gun Yamaha 350 Raptor

Rev Box Big Gun Yamaha 250 Raptor (2008-2012)

Big Gun Rev Box is an easy way to add power and increase the ability to push the redline on your ATV engine higher.
Big Gun Rev Box adds up to 3 horsepower once snapped in for instant power.
Big Gun Rev Box allows RPM levels to go from 11,200 all the way up to 12,000 on your ATV engine for more top end.