Big Gun Exhaust TFI Power Box EFI Tuner - 40-R50F 40-R54K WARN:VRX 25 / VRX 25-S

WARN:VRX 25 / VRX 25-S / VRX 35 / VRX 35-SMay require adding washers to shim up to fit due to size

KOLPIN :2500 / 3500 / 4500

2016-2019 Polaris General 1000

2015-2019 Polaris RZR 4 900

External microphone

Big Gun Exhaust TFI Power Box EFI Tuner - 40-R50F 40-R54K WARN:VRX 25 / VRX 25-STFI POWER BOX When installing an aftermarket exhaust, proper tuning is a must. The Big Gun Power Box is a plug and play fuel controller that allows you to properly tune your fuel injected motorcycle, ATV or Side x Side in just 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