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Unlock the full rev potential of your 2003–2004 Polaris Predator 500 with the Big Gun Rev Box. This plug-and-play ignition controller removes the factory CDI's built-in rev limiter, allowing your engine to spin freely to its mechanical limit for maximum top-speed performance. An essential upgrade for ATV drag racers and performance riders who have already modified their engine with aftermarket exhaust, carburetor, or air intake upgrades.
The Big Gun Rev Box installs directly into the factory CDI wiring harness — no cutting, splicing, or permanent modifications required. The precision-tuned ignition curve is optimized for the Predator 500's engine characteristics to deliver smooth power delivery right up to the rev ceiling. Installation is fully reversible, so your stock CDI can be reinstalled at any time.
