Big Gun 2008-2010 Polaris RZR 800/RZR 800S/RZR 4 Power Box

Unlock hidden horsepower with this Big Gun Power Box fuel controller. The plug and play unit optimizes your fuel curve for maximum performance without complicated tuning. Designed specifically for fuel injected powersports vehicles. Feel the difference from the first throttle twist.

Big Gun engineers the Power Box to work with your stock ECU and sensors. The unit intercepts fuel injector signals and adjusts pulse width for richer fueling. No permanent modifications to your wiring or computer are needed. Installation takes minutes with basic hand tools.

This Power Box delivers noticeable gains in throttle response and power across the rev range. The richer mixture eliminates the lean hesitation common on stock machines. You get smoother acceleration and better performance especially when paired with exhaust upgrades. The sealed unit handles the elements without issue.

This fuel controller fits the Polaris models listed. Verify your exact year and model before ordering to ensure proper fitment. The Power Box works with stock or modified exhaust systems. No rejetting or ECU flashing required for installation.

Big Gun has been building performance exhaust and fuel systems for decades. Their products are proven on the track and trail by serious riders. Add power the easy way with the Big Gun Power Box.