2003-2004 Predator 500 Rev Box (BIG40-R10) coil-spacer or 20 x 9 and

or 20 x 9 and 5 in

Part Number: LF2-531

thanks to extensive engineering and testing

Full-Race recommends 2000°F Ceramic Coating on our manifolds

Can 3x the life of injection components

2003-2004 Predator 500 Rev Box (BIG40-R10) coil-spacer or 20 x 9 andThe Big Gun Rev Box for the Polaris Predator 500 is a high performance electronic upgrade designed to unlock the full potential of your engine. As an affordable alternative to expensive OEM replacement CDI boxes, this unit is engineered to provide more aggressive power delivery. By increasing the overall RPM limit over the factory settings and advancing the timing curve, the Big Gun Rev Box allows your engine to pull harder for longer, providing a