Fuel and Intake

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Air Filter, K&N

KLX250S '94 - '07
Add Air Filter Care Kit
$72.95
  • Increased air flow over the stock air filter
  • Designed to increase horsepower and throttle response
  • Designed to fit inside the factory air box
  • Larger surface area over foam filters which offers longer service intervals in dusty conditions
  • Four layers of premium cotton gauze provides outstanding filtration
  • Washable & re-usable, never wears out
  • One filter will last the lifetime of your bike
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Air Filter, Uni

KLX250S '94 - '21
$28.95
  • Designed to fit in the factory air box exactly like original filter
  • The best selling replacement air filter for competition motorcycles and ATVs
  • Unique two stage design allows for easy and complete cleaning
  • Dual layer of foam, can be serviced separately
  • Thin Ultra Seal base is virtually impossible to tear and has a built-in "Grease Groove"
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

EFI Programmer, EJK

KLX250S '08 - '18
$224.95

The EJK evolved out of the need to address the ever-increasing complexity of factory fuel injection. For the newcomer to the market or professionals wanting an easier method for tuning fuel injection, the EJK is a customizable solution for the rider that wants to take control of their tuning needs.

This unit is a piggy-back EFI controller because it does not replace the stock ECU, but rather monitors the signals to the injectors and makes fuel adjustments based on the mode settings. The GEN 3 has a push button interface allowing access up to 6 different modes to allow for quick fine tuning by the end user without needing a computer.

Key Features:

  • No computer or dyno needed!
  • Plug and play, simple to install, base settings preset
  • Unique load based technology
  • Full range tunability available
  • Does NOT interfere with stock ECU operation
  • Simple push button adjustment interface
  • Water-resistant 
  • 2-Year warranty
  • Compact size - 2.2" H x 3.4" W x 0.5" D
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Fuel Mixture Screw, Extended

KLX250S '09 - '14
$19.95

The extended fuel mixture screw makes it much easier to fine tune the idle mixture. This screw is made specifically for the stock OEM Kawasaki Keihin carburetor. It's a nice addition to installing a jet kit or any other performance mods.

WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.

Jet Kit, DynoJet

Add Fuel Mixture Screw, Extended
Add Pocket Tuner Tool
$74.95
  • Provides a simple and affordable solution to carburetor tuning problems
  • Allows you to tune your bike for increased power and smoothness while retaining fuel economy
  • Includes a guide booklet on how to install and use your jet kit to it's full potential