CRF250L EJK Fuel Injection Controller
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EJK, short for Electronic Jet Kit, provides the best available EFI (Electronic Fuel Injection) controller for the 2017+ Honda CRF250L. We recommend this product any time you are installing an aftermarket exhaust, intake, or when you just want to make your bike run better.

NOTE: EJK designs and manufactures these controllers and allows several other companies to private label them. This product, with the EJK logo on it, is identical to the one FMF sells with their logo on it.

Benefits on a Stock Honda CRF250L:
If you're keeping your engine stock, an EJK EFI controller is one of the best bang-for-the-buck mods. The CRF250L runs lean with the factory fuel map and really falls on its face in the low to mid range when you hammer the throttle. A Fuel Injection Controller will adjust the fuel mapping, making the bike run better, helping eliminate that dead spot early in the powerband.

Benefits on a Stage 1 Honda CRF250L:
If you've decided to add an aftermarket exhaust and/or intake system (Stage 1 mods) to your CRF250L, an EJK EFI Controller is HIGHLY RECOMMENDED if you want to take full advantage of those performance parts. Aftermarket intakes/air filters give your engine more air, and exhaust systems allow it to breath better. Without an EFI Controller, the bike will run lean and you may experience pinging or backfiring, and the bike may run hot. Additionally, without the proper fueling that an EFI Controller provides, you will see little to no performance gains from your new exhaust system and, in fact, your bike may run poorly.

  • 2017-2020 Honda CRF250L and CRF250L Rally
  • NOTE: We no longer carry the EJK for the 2013-2016 Honda CRF250L. You can order it direct from

    Standard Features:
  • Plug-n-play installation
  • Simple and easy tuning with no dyno required
  • Simple Push Button Adjustment Interface
  • Does not require a computer or software to tune
  • Comes pre-programmed for the best results
  • Load Based Tuning takes into account RATE, TPS and RPM to construct three main zones for fuel adjustment
  • "On-the-fly' tuning. You can make fuel adjustments in your garage or on the side of the road
  • Does Not Interfere with Stock ECU Operation
  • Water-Resistant
  • Available for standard CRF250L, Rally, and CRF250L w/ Big Bore Kit
  • 2 Year Warranty

    Part Numbers:
  • 2017+ CRF250L/Rally: 9110044

  • ** OUT OF STOCK - We do not carry this product any longer, but you can order them direct from

    CRF250L EJK Fuel Injection Controller

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