Big Gun Rev Box Yamaha Raptor 2002-2008 & Badger 1992-2001

Big Gun Rev Box adds up to 10% horsepower increase over stock once snapped in. Comes ready to install and go. Allows RPM to rev out 900 RPM higher than stock while advancing the timing for a bit more torque on the bottom end.

Applications:

• 1992 - 2001 Yamaha YFM80 Badger         
• 2002 - 2008 Yamaha YFM80W Raptor