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Big Gun

Big Gun 40-R60 TFI Power Box


Generally ships to addresses in the contiguous United States the same business day if ordered by 12:15PM Central Time!

Increases horsepower.
Improves throttle response.
Installs in minutes.
New 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.

Suzuki RM-Z250 2010-2015
Yamaha YZ250F 2010-2012

Please Note: