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Big Gun

Big Gun 40-R54S TFI Power Box

$252.89

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.

Polaris ACE 900 SP 2016
Polaris ACE 900 XC 2017-2018


Please Note:

Note: