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Kawasaki KX250F

Kawasaki KX250F

Designed to continue its history of winning the 2020 model KX250 features a new engine with increased power, an even more potent high-rpm range, and a higher rev limit. Complemented by a lightweight, well-balanced chassis with a new fork and stronger brakes, this performance advantage translates to quicker lap times, making it the quickest KX250 to date.

  • RRP:
    £7,099
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    01206 860006

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Stronger Brakes

A larger-diameter ø250 mm rear disc complements the oversized ø270 mm front disc, delivering stronger stopping power. New front brake pad material offers increased controllability.

Easy engine tuning: DFI Setting Data Selection

Using the provided DFI couplers, riders can quickly and easily access their choice of three maps (standard, hard, soft) provided in the ECU.

Factory-inspired tuning

Works-base bridged-box bottom piston is just one of many features inspired by our factory racers.

Large-Diameter Coil-Spring Fork

Handling suspension duties up front is a new high-performance ø48 mm inverted coil-spring fork. The large-diameter inner tubes enable the use of large damping pistons, delivering smooth action and firm damping. Stiffer spring rates front and rear match the KX250’s increased power.

More race-winning high-rpm power 

The new engine boasts an increase in peak power of approximately 2.4 kW (3.3 PS), and performance focused on the high-rpm range. The stronger high-rpm performance, easily noticeable from 10,000 min, gives riders an advantage on the straights, and makes it easier to tie corners together for quicker lap times.

The new engine also features a short-stroke configuration, with bore and stroke measuring 78.0 x 52.2 mm. Thanks to the wider bore, larger intake and exhaust valves can be used, enabling greater flow for increased high-rpm performance.

Slim, Ergonomic Bodywork

The narrow frame and minimalistic bodywork offer a slim riding position that facilitates control. A low, flat tank/seat design makes it easier to sit farther forward, and long, smooth surfaces make it easy to slide back and forth.

Adjustable Ergonomics

A choice of four handlebar positions and two footpeg positions allows riders to tailor their riding position to suit body size and preference.

Dual injectors

The KX250 is the only production motocrosser with dual injectors (a feature since 2012): an injector downstream of the throttle valve (where injectors are located on standard FI systems), tasked with delivering smooth, instant response; and a second, upstream injector located close to the airbox, which makes a significant contribution to engine output at high rpm.

Slim Aluminium Perimeter Frame

Already a very high-level frame, minor rigidity balance tweaking care of new lower front engine mounts contributes to an improved ability to soak up bumps.

KX FI Calibration Kit (Accessory)

KX FI Calibration Controller, a portable handheld calibration tool, enables riders to make changes to engine maps by plugging into the ECU without needing a PC or battery. Comes equipped with seven pre-set map settings.

Finger-follower valve actuation

Finger-follower valve actuation enables a higher rev limit (increased 500 min-1), and more aggressive cams for harder-hitting power.

Holeshot advantage: Launch Control Mode

Factory-style launch control system increases the chance of getting a good start by helping riders maximise traction when starting on a slippery surface.

Engine
Engine type

Liquid-cooled, 4-stroke In-Line Four

Displacement 249 cm3
Bore x stroke 78.0 x 52.2 mm
Compression ratio 14:2:1
Valve system DOHC, 4 valves
Fuel System 44 mm x 1 (Keihin) with dual injection
Ignition System

Digital DC-CDI

Starting System

Primary Kick

Lubrication

Forced lubrication, semi-dry sump

Transmission
Transmission

5-speed, return

Final Drive Chain
Primary reduction ratio 3.350 (67/20)
Gear ratios: 1st

2.142 (30/14)

Gear ratios: 2nd

1.750 (28/16)

Gear ratios: 3rd

1.444 (26/18)

Gear ratios: 4th

1.235 (21/17)

Gear ratios: 5th

1.045 (23/22)

Final Reduction Ratio

3.846 (50/13)

Clutch Wet multi-disc, manual
Brakes & Suspension
Brakes, front Single semi-floating 270 mm petal disc. Caliper: Dual-piston
Brakes, rear Single 250 mm petal disc. Caliper: Single-piston
Suspension, front 48 mm inverted telescopic fork with adjustable compression and rebound damping
Suspension, rear New Uni Trak with adjustable dual-range (high/lowspeed) compression damping, adjustable rebound damping and adjustable preload
Frame & Dimensions
Frame type Perimeter, aluminium
Trail 130 mm
Wheel travel, front 314 mm
Wheel travel, rear 310 mm
Tyre, front 80/100-21 51M
Tyre, rear 100/90-19 57M
Steering angle, left / right 42° / 42°
Dimensions (L x W x H) 2,172 x 820 x 1,269 mm
Wheelbase 1,480 mm
Ground Clearance 333 mm
Fuel capacity 6.4 litres
Seat height 948 mm
Curb Mass 105.2 kg