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Bazzaz Motocross Fuel Control ZFi Tuning Unit Kawasaki Kx250f Kx 250f 13-15

Bazzaz Motocross Fuel Control ZFi Tuning Unit Kawasaki Kx250f Kx 250f 13-15

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  • MSRP: $324.99
  • You Save: $55.04 (17%)
  • Brand: Bazzaz
  • Condition: New
  • SKU: 277-F433-WPS
  • Manufacturer Part Number: F433
  • Warranty: Yes
  • Part Type: Fuel Controller
Bazzaz Motocross Z-Fi Tuning Fuel Control Unit Kawasaki KX250F 2013-2015

Brand New, In stock Ready to ship!

Kawasaki Kx250f 2013, 2014, 2015 year models


Unleash horsepower, torque and throttle response by controlling air / fuel mixture from injectors, especially after making any fuel-related modifications, including exhaust. Developed in top level, professional racing, the Bazzaz Z-Fi Fuel Control Unit takes operational command of all fuel injectors, not just half like the competitors. This is a significant advantage in realizing the perfect tune, resulting in significantly better throttle response and overall engine performance.

An engine's power is dependent on how well the air / fuel mixture is ignited in the cylinder. Air / fuel ratio (AFR) is controlled by the engine control unit (ECU). Bazzaz fuel controllers piggy back onto the Engine Control Unit (ECU), intercepting the signal sent to the fuel injectors and changing it. The precise data for these changes are stored in the Z-Fi Fuel Controller in the form of a fuel map. The Z-Fi comes pre-programmed with an enhanced fuel map for power gains and improved throttle response. With a proper fuel map the rider can expect a smoother and more responsive throttle along with horsepower and torque gains. 

Motorcycles with any modifications (such as exhaust or high-flow filters) must have fuel tuned to accommodate the change in air to the AFR. 


  • Z-Fi is a plug-and-play unit that piggy-backs onto the stock ECU.
  • Each unit comes with a specific harness for each bike that utilizes O.E.M. connectors for simple installation.
  • Stores two modifiable fuel maps, one pre-programmed for your specific bike model with a slip-on exhaust.
  • The two maps are switchable 'on the fly' with the Map Selection Switch (sold separately).
  • Access the free Bazzaz Z-Mapper software to view and easily adjust fuel maps.
  • Featuring a USB interface with industry-recognized, easy-to-use software, the Z-Fi can be tuned at the bike or at a PC (powered by USB alone).
  • Made in USA
  • Continue on to pro race-level, custom fuel mapping with the Z-AFM air / fuel mapper that builds maps for your specific modifications and atmospheric conditions (sold separately).

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