Big Gun Exhaust TFI Power Box EFI Tuner - 40-R50F 40-R54K 2015-2019 Polaris RZR 4 900

2015-2019 Polaris RZR 4 900

All Plow tabs are tapered to help reduce hang-ups while trail riding

2016-2019 Polaris General 1000

External microphone

Part Number: 40-R51A

Big Gun Exhaust TFI Power Box EFI Tuner - 40-R50F 40-R54K 2015-2019 Polaris RZR 4 900TFI 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