
ATV/UTV$6.72

BIG GUN EXHAUST
Out of stock · stock as of Sep 3, 2026
Shipping calculated at checkout
30-day returns on unused parts
BIG GUN - TFI POWER BOX A plug-and-play fuel controller allows you to properly tune your fuel injected motorcycle, ATV or Side x Side in minutes. Installing a Power Box allows you to get the most out of your aftermarket exhaust and increases throttle response. A Power Box helps cure the lean issue that is run into when installing a higher-flowing exhaust and comes pre-programmed with a middle-of-the-road setting, making it easy to install and go ride.