Big Gun TFI Power Box for Polaris Sportsman / Scrambler XP 850 models - 40-R54G 2011 Arctic-Cat M8 2013 - 2019 Polaris Rush

2013 - 2019 Polaris Rush 600 Pro-R

Fitments 2008 Arctic Cat 400 DVX

2015 Polaris Ranger EV 4x4 - Midsize

Hex 5/16-18 x 5/8

Big Gun TFI Power Box for Polaris Sportsman / Scrambler XP 850 models - 40-R54G 2011 Arctic-Cat M8 2013 - 2019 Polaris RushBig Gun Exhaust TFI Power Box Increases horsepower and throttle response Installs in minutes Third generation technology No computer needed to adjust EFI Plug in technology (Does not interfere with stock ECU map) Integrated faceplate buttons provide easy adjustment Highly recommended for any EFI unit with aftermarket exhaust 1 Year Limited Warranty When installing an aftermarket exhaust, proper tuning is a must. The Big Gun Power Box is a plug and