Big Gun TFI Power Box for 2009-13 Yamaha YFZ450R - 40-R57E MPN_3503KD Graphics windshields are silkscreened to

Graphics windshields are silkscreened to a solid black color at the base to cover mounting area

1999 Honda TRX400FW Foreman 4x4

All wire ends are bird caged prior to terminal casting for superior pull-out resistance

Tool-less adjuster has built in lubrication port with o-ring cover for easy

2021 Harley-Davidson Softail Heritage Classic - FLHCS

Big Gun TFI Power Box for 2009-13 Yamaha YFZ450R - 40-R57E MPN_3503KD Graphics windshields are silkscreened toBig 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