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Two Brothers Juice Box Gen 4 Fuel Controller For Harley

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This product is legal in California only for racing vehicles which may never be used, registered or licensed for use upon a highway.

Two Brothers Juice Box Gen 4 Fuel Controller For Harley

You've installed your new air cleaner. Your exhaust rattles the road as you twist your wrist. Now let's make some real power with Two Brother's Juicebox Gen 4 fuel tuner, designed to realize the full potential of your bike.


  • No dyno tuning needed
  • Dyno tuned maps pre-installed on box
  • Uses load-based technology for the ultimate in tuning
  • User-friendly push button interface for ease of use
  • No laptop needed; simply plug and play
  • Made in the USA
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