Kawasaki KX250F

The Kawasaki KX250F was introduced in 2004 as a replacement for the 2-stroke motocross versions Kawasaki KX250 and Kawasaki KX125. The first versions of the motorcycle were developed jointly with Suzuki - in the early years of production there were two absolutely identical models on the market Kawasaki KX250F and Suzuki RM-Z250.

Main competitors:

• Honda CRF250R
• KTM 250 SX-F
• Suzuki RM-Z250
• Yamaha YZ250F

In 2006, the KX250F undergoes restyling and moves away from the concept common with the RMZ250, standing out as an independent model. The updated version received a new generation of the frame, redesigned engine, suspension and Renthal steering wheel.

For 2009, the model is redesigned with an updated look and redesigned engine, suspension and chassis components (to reduce weight and improve handling).

In 2010, Kawasaki released the next generation KX250F, although visually the model was very similar to the previous generation.

2011 saw another restyling of the Kawasaki KX250F, which received electronic fuel injection and a new Showa Separate Function front Fork (SFF). In 2012, a second injector was added to the fuel injection system, which slightly increased the maximum power.

In 2013, the model undergoes changes again, receiving a new look, new settings for the injection system, engine and suspensions.

For 2017, Kawasaki introduced the next generation KX250F. The engine and suspension settings were changed again, the size of the front brake disc increased, the curb weight decreased by almost 2 kg. Additional electronic accessories are also offered:

• KX FI Calibration Kit
• DFI Couplers
• Launch Control Mode

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Specifications

Specifications Kawasaki KX250F:

Model	Kawasaki KX250F
Motorcycle type	cross
Release year	2004+
Frame	aluminum half duplex
Engine type	1-cylinder, 4-stroke
Working volume	249 cm³
Bore / Stroke	77.0 x 53.6 mm
Compression ratio	12.6: 1 - KX250-N 13.5: 1 - KX250-T, KX250-Y 13.2: 1 - KX250W-X 13.8: 1 - KX250-Z 13.4: 1 - KX252-A
Cooling	liquid
Number of valves per cylinder	DOHC, 4 valves
Fuel supply system	Carburetor, 1x Keihin FCR37 - KX250N-W Carburetor, 1x Keihin FCR-MX37 - KX250-X Injector, 1x Keihin 43 mm - KX250-Y +
Ignition type	AC-CDI - KX250N-X DC-CDI - KX250-Y +
Maximum power	43.0 h.p. (31.6 kW) @ 11000 rpm - KX250-N
Maximum torque	28.7 Nm (2.9 kg * m) @ 8500 rpm - KX250-N
Gearbox	5-speed
Drive type	chain
Front tire size	80 / 100-21 51M
Rear tire size	100 / 90-19 57M
Front brakes	1 disc, 250mm, 2-piston caliper - KX250N-Z Single disc, 270 mm, 2-piston caliper - KX252-A
Rear brakes	1 disc, 240 mm, 1-piston caliper
Front suspension	Inverted Fork (Fully Adjustable), 300mm Travel - KX250-N Inverted Fork (Fully Adjustable), 315mm Travel - KX250T-Z Inverted Fork (Fully Adjustable), 310mm Travel - KX252-A Showa Separate Function front Fork (SFF) - 2011+
Rear suspension	linkage progressive Uni-Trak with monoshock (fully adjustable), stroke - 310 mm
Motorcycle length	2170 mm 2160 mm - KX250-T 2172 mm - KX252-A
Motorcycle width	840 mm - KX250-N 820 mm 825 mm - KX252-A
Motorcycle height	1270 mm
Wheelbase	1475 mm - KX250-N, KX250Y-Z 1469 mm - KX250-T 1470 mm - KX250W-X 1478 mm - KX252-A
Saddle height	960 mm - KX250N-T 955 mm - KX250W-X 945 mm - KX250Y-A
Minimum ground clearance	340 mm - KX250-N, KX250W-X 372 mm - KX250-T 330 mm - KX250Y-Z 324 mm - KX252-A
Acceleration to 100 km / h
Maximum speed
Fuel tank capacity	7.5 L - KX250-N 7.2 L - KX250-T, KX250-Y 8.0 L - KX250W-X 6.1 L - KX250-Z 6.4 L - KX252-A
Motorcycle weight (curb)	102.5 kg - KX250N-T 104.3 kg - KX250-W 105.1 kg - KX250-X 105.7 kg - KX250-Y 106.2 kg - KX250-Z 104.5 kg - KX252-A

Documentation

• Kawasaki KX250F: manuals