The 2027 Kawasaki KX250F is billed as "the bike that builds champions," powered by a 249 cc 4-stroke single with dual injectors, electric start, and a 5-speed transmission, gaining stronger power across the rev range, a hydraulic clutch with 15% more spring load for better traction transfer, and a new short-type silencer that's 50 mm shorter and 230 g lighter for improved mass centralisation. It rides on a lightweight aluminium perimeter frame paired with a Showa 49 mm inverted coil-spring fork (305 mm travel) and New Uni-Trak rear suspension with a Showa shock (307 mm travel), revised for 2027 to improve ground-holding on challenging surfaces, plus semi-floating 270 mm front and 240 mm rear petal disc brakes. Rider aids include two selectable power modes, Kawasaki Traction Control (KTRC), and factory-style Launch Control Mode, all accessible via handlebar switches, alongside smartphone connectivity through RIDEOLOGY THE APP KX for on-the-fly engine map adjustments — rounded out by ERGO-FIT adjustable ergonomics, ODI Lock-On grips, and updated front-end styling, at a 955 mm seat height and 109.5 kg curb weight.
The KX250F engine retains the elements that made it such a strong performer: finger-follower valve actuation, intake and exhaust layout optimised for efficient flow, dual injectors, and a single-shaft primary balancer—elements that together deliver strong, controllable power. Further refinements for 2027 result in increased output, more linear throttle response, and more efficient power transfer, contributing to an overall boost in race-ready performance on the track.
FACTORY-STYLE CHASSIS COMPONENTS AND TUNING
Enhanced Stability
While retaining the previous model’s light, agile handling character, the KX250F motocrosser receives chassis updates that add to its composed behaviour. Central to these updates are revised front and rear suspension settings, which offer increased ground-holding performance, particularly on challenging surfaces. A more compact silencer, used on non-North American models, contributes to reduced weight and mass centralisation, offering chassis characteristics that allow riders to make full use of the improved power feeling.
ADVANCED TECH AT YOUR FINGERTIPS
Power Modes, Kawasaki Traction Control, and Launch Control Mode
Power Mode selection, Kawasaki TRaction Control and Launch Control Mode are all accessible from the left handle switches at the push of a button. And with smartphone connectivity, riders can adjust engine maps right from their smartphones.
Technical Specifications
Engine
4-stroke Single
Displacement
249 cc
Bore x Stroke
78.0 x 52.2 mm
Compression Ratio
14.0:1
Valve System
DOHC, 4 valves
Fuel System
Fuel injection: ø44 mm x 1, with dual injectors
Ignition
Digital DC-CDI
Starting
Electric
Cooling
Liquid-cooled
Lubrication
Forced lubrication, semi-dry sump
Transmission
5-speed, return
Primary Reduction Ratio
3.350 (67/20)
Gear Ratio 1st
2.077 (27/13)
Gear Ratio 2nd
1.688 (27/16)
Gear Ratio 3rd
1.438 (23/16)
Gear Ratio 4th
1.235 (21/17)
Gear Ratio 5th
1.045 (23/22)
Final Reduction Ratio
3.846 (50/13)
Clutch
Wet multi-disc, manual
Final Drive
Chain
Frame
Perimeter, aluminium
Front Suspension
ø49 mm inverted fork with adjustable compression and rebound damping
Rear Suspension
New Uni-Trak, single shock with adjustable dual-range (high/low-speed) compression damping, adjustable rebound damping and adjustable spring preload
The 2027 Kawasaki KX250F is billed as "the bike that builds champions," powered by a 249 cc 4-stroke single with dual injectors, electric start, and a 5-speed transmission, gaining stronger power across the rev range, a hydraulic clutch with 15% more spring load for better traction transfer, and a new short-type silencer that's 50 mm shorter and 230 g lighter for improved mass centralisation. It rides on a lightweight aluminium perimeter frame paired with a Showa 49 mm inverted coil-spring fork (305 mm travel) and New Uni-Trak rear suspension with a Showa shock (307 mm travel), revised for 2027 to improve ground-holding on challenging surfaces, plus semi-floating 270 mm front and 240 mm rear petal disc brakes. Rider aids include two selectable power modes, Kawasaki Traction Control (KTRC), and factory-style Launch Control Mode, all accessible via handlebar switches, alongside smartphone connectivity through RIDEOLOGY THE APP KX for on-the-fly engine map adjustments — rounded out by ERGO-FIT adjustable ergonomics, ODI Lock-On grips, and updated front-end styling, at a 955 mm seat height and 109.5 kg curb weight.
content_description2
Power;Performance;Technology;Details#####Engine|4-stroke Single;Displacement|249 cc;Bore x Stroke|78.0 x 52.2 mm;Compression Ratio|14.0:1;Valve System|DOHC, 4 valves;Fuel System|Fuel injection: ø44 mm x 1, with dual injectors;Ignition|Digital DC-CDI;Starting|Electric;Cooling|Liquid-cooled;Lubrication|Forced lubrication, semi-dry sump;Transmission|5-speed, return;Primary Reduction Ratio|3.350 (67/20);Gear Ratio 1st|2.077 (27/13);Gear Ratio 2nd|1.688 (27/16);Gear Ratio 3rd|1.438 (23/16);Gear Ratio 4th|1.235 (21/17);Gear Ratio 5th|1.045 (23/22);Final Reduction Ratio|3.846 (50/13);Clutch|Wet multi-disc, manual;Final Drive|Chain#####Frame|Perimeter, aluminium;Front Suspension|ø49 mm inverted fork with adjustable compression and rebound damping;Rear Suspension|New Uni-Trak, single shock with adjustable dual-range (high/low-speed) compression damping, adjustable rebound damping and adjustable spring preload;Front Wheel Travel|305 mm;Rear Wheel Travel|307 mm;Rake|27.0°;Trail|118 mm;Steering Angle (L/R)|42° / 42°;Front Tyre|80/100-21 51M;Rear Tyre|110/90-19 62M;Front Brake/s|Semi-floating ø270 mm petal disc;Front Caliper/s|Dual-piston;Rear Brake|ø240 mm petal disc;Rear Caliper|Single-piston#####Dual Injectors|Yes;KTRC (Kawasaki Traction Control)|Yes;Launch Control Mode|Yes;Power Modes|Yes;Smartphone Connectivity|Yes;ERGO-FIT|Yes#####Dimensions (LxWxH)|2,190 x 820 x 1,265 mm;Wheelbase|1,485 mm;Road Clearance|340 mm;Seat Height|955 mm;Curb Weight*|109.5 kg;Weight without Fuel|105.0 kg;Fuel Capacity|6.2 litres;Model Code|KX252EVFNN
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