Big Gun Rev Box Polaris Predator 500 2003-2004 - 40-R10

Big Gun Rev Box adds up to 3 more horsepower once snapped in. Comes ready to install and go. Allows RPM to rev out 750 RPM higher than stock while advancing the timing for a bit more torque on the bottom end.

Applications:

• 2003 - 2004 Polaris Predator 500