Big Gun TFI Power Box for 2005-14 Polaris Sportsman 800 Models - 40-R54C 2005 Arctic-Cat Sabercat 700 LX 1999 Yamaha YZ250

1999 Yamaha YZ250

Fitments 2009 Suzuki DR-Z70

2015 - 16 Militia 1000

1993 Honda CR250R

2000 KTM 300 MXC/EXC - USA models

Big Gun TFI Power Box for 2005-14 Polaris Sportsman 800 Models - 40-R54C 2005 Arctic-Cat Sabercat 700 LX 1999 Yamaha YZ250Big 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