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Polaris Sportsman 850xp 850 xp Efi Big Gun Tfi Fuel Controller 2009-2018 40-R54G

Polaris Sportsman 850xp 850 xp Efi Big Gun Tfi Fuel Controller 2009-2018 40-R54G

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  • MSRP: $289.99
  • You Save: $58.00 (20%)
  • Brand: Big Gun Exhaust
  • Condition: New
  • SKU: 40-R54G-A1
  • Manufacturer Part Number: 40-R54G-A1
  • Surface Finish: Black
  • Warranty: 1 Year
  • Placement on Vehicle: Front
  • Fits: ATV
  • Country of Manufacture: United States
  • Compatible Make: Polaris
  • Compatible Model: Sportsman 850xp
  • Years: 2009-2018

Big Gun Exhaust Power Box

Fuel Management Controllers Instant 3-5 Horse Power Gains

Polaris Sportsman 850xp 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 year model

Part # 40-R54G

Simply plug the included connector into the existing factory wiring harnesses, mount the controller for easy access, and make the adjustments without ever leaving the seat of your bike/ATV.


Big Gun TFI Power Box are trick for several off-road fuel injected vehicles. Not merely do these units permit for better power but they provide the proper fuel needed to go fast as well as keep your engine happy. These units are manufactured to make for adjusting very simple with the push of a button you can simply regulate for more or less fuel in whichever part of the control range you feel you need. Why buy the Big Gun power box over additional items similar to the Power Commander? Simple- Once you get past the noticeable advantage (the price) our technology has even more to offer. The first effortlessness of fine-tuning allows anybody the ability to achieve an optimum fuel mixture setting for their motorcycle or atv. No laptop computers are necessary, nor are any complicated spreadsheets with over 100 unusual adjustments, no internet downloads, or dynamometer interfaces. This simplicity allows you to improve YOUR fuel settings to make the best use of driveability and performance. Secondly, this product is load based, which allows you to keep your stock fuel economy even as the accelerator pump characteristic improves roll-on power. All made without having to use any tools simply push the buttons plus dial in the setting its that easy! For the most part, users notice an increase of 3-5 horsepower when using this component.

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