2018 Kawasaki KX 250F



With more Supercross and Pro Motocross wins than all other OEMs combined, no one else comes close to the championship-winning power and race-ready technology of the Kawasaki KX™250F. The tradition continues in the updated 2018 KX250F, The Bike That Builds Champions.

Advanced Technology

  • KX™ FI CALIBRATION KIT: Kawasaki’s handheld FI controller* eliminates need for computer at the track. Adjust fuel mapping and ignition settings with factory precision. Controller enables you to store up to 7 preset maps for different tracks and conditions. *Sold Separately as a Kawasaki Genuine Accessory.
  • DFI® COUPLERS: Select a coupler to access 1 of the 3 different pre-set engine maps. Alter the engine characteristic with easy plug-and-play technology. Standard, hard and soft terrain setting options.
  • INDUSTRY-FIRST LAUNCH CONTROL MODE: Maximizes traction and acceleration out of the gate. Technology derived from Kawasaki factory race teams. Activate with push of a button. Precise ignition timing helps optimize traction, minimizing slippage. Functions in first and second gears, automatically disengages in third gear.

Class Leading Adjustability

  • CLASS-LEADING ADJUSTABILITY: The best way to ensure peak performance is to fine-tune your KX™ motorcycle to fit you. The KX250F can be adjusted to suit a wide range of riders.
  • SHOWA SEPARATE FUNCTION FORK - TYPE 2: Advanced separate function fork design separates spring and damping functions for lightweight and fully adjustable performance. Fine-tuned suspension settings deliver improved bump absorption and suspension action, making it easier for riders to trace their intended line through corners while offering greater composure when braking and accelerating.
  • ERGO-FIT™ ADJUSTABILITY: The adjustable handlebar mounts provide a choice of 4 positions (35 mm range of adjustment) enabling the rider to set up an ideal riding position. Factory-style Renthal handlebar and handlebar pad come standard.
  • ERGO-FIT™ FOOTPEGS: Two-position adjustable footpegs help reduce knee angle when seated. Footpegs allow the rider to adjust center of gravity by 5 mm.

Frame & Bodywork

  • FRAME & BODYWORK: Slim, lightweight aluminum perimeter frame contributes to razor-sharp cornering and superior handling while the flat seat profile and minimalist bodywork allow easy rider movement.
  • SLIM, LIGHTWEIGHT FRAME: Aluminum perimeter frame is narrow and light for championship-winning agility. Geometry optimized for razor-sharp cornering ability. Radiators are rotated inward for narrow width between shrouds, allowing easy rider movement.
  • AGGRESSIVE BODYWORK: Minimalist bodywork is lightweight. Flat tank and seat allow freedom of movement. Fuel tank has 1.7 gallons capacity to fuel long motos. Features durable in-mold graphics.

Updated Engine

  • CHAMPIONSHIP-PROVEN POWER: The 2018 KX™250F motorcycle features an updated engine that delivers increased power across the entire rev range. Get an inside look at the innovative design features.
  • ENGINE: Updated cylinder head, intake cam, and revised compression ration contribute to increased power and torque across the rev range. Lightweight race-team-inspired bridged-box bottom piston to optimize combustion efficiency and plateau cylinder homing to help reduce friction.
  • INTAKES: Rear fender with under seat intake channels ensure clean airflow. Revised air intake duct for increased air volume.
  • FUEL INJECTION: Innovative duel-injector system with revised injector angles utilizes a downstream injector below the throttle valve and an upstream injector located near the airbox. Together, they contribute to more efficient filling of the cylinder to maximize power. The upright engine orientation with downdraft style air intake routing improves cylinder-filling efficiency, contributing to crisp throttle response and broad power delivery. Lightweight 43 mm throttle body ensures sharp, responsive power.
  • EXHAUST: Revised exhaust header is designed to optimize internal engine updates.

General Information

Manufacturer Kawasaki
Model Year 2018
Model KX 250F
Model Code KX252AJF
Color Lime Green



Front - Single semi-floating 270 mm Braking® petal disc with dual-piston caliper

Rear - Single 240 mm Braking® petal disc with single-piston caliper


Front - 80/100-21

Rear - 100/90-19


Length Overall - 85.5 in.
Height Overall - 50 in.
Width Overall - 32.5 in.

Curb - 230.3 lb.

Curb weight includes all necessary materials and fluids to operate correctly, full tank of fuel (more than 90 percent capacity) and tool kit (if supplied).

Ground Clearance 12.8 in.
Wheelbase 58.2 in.
Seat Height 37.2 in.


Transmission 5-speed, return shift
Final Drive Chain


Engine 4-stroke, 1-cylinder, DOHC
Displacement 249 cc
Bore x Stroke 77 x 53.6 mm
Compression Ratio 13.4:1
Fuel System DFI® with 43 mm Keihin throttle body and dual injectors
Fuel Capacity 1.69 gal.
Ignition Digital DC-CDI
Cooling Water


Frame Aluminum perimeter

Front - 48 mm inverted Showa SFF telescopic fork with 40-way spring preload adjustability and 22-position compression and 20-position rebound damping adjustability; 12.2 in. travel

Rear - Uni-Trak® linkage system and Showa shock with 19-position low-speed and 4 turns high-speed compression damping, 22-position rebound damping and fully adjustable spring preload; 12.2 in. travel

Rake 28.4°
Trail 4.8 in.


Warranty Not available