Highlights of the Kawasaki KX250FX (MY27)

Stronger power across the rev range | F21"/R18" wheels and off-road tyres

Overview of the Kawasaki KX250FX model range

The KX250FX motorcycle takes cross-country racing to a whole new level with stronger power, an improved hydraulic clutch, and revised suspension settings for enhanced ground-holding performance. Advanced tech like ERGO-FIT adjustable components and RIDEOLOGY THE APP KX pair with off-road ready suspension to conquer the most technical terrain. Climb the ranks with confidence on the KX250FX, the bike that builds champions.

• 249 cc 4-stroke engine with electric start
• NEW Stronger power across the rev range
• NEW Improved hydraulic clutch
• NEW Short-type silencer
• NEW Cross-country-specific suspension settings for improved ground-holding performance
• NEW Lighter, more functional front-end styling
• NEW Improved Power Mode selection with handlebar-mounted switch
• Kawasaki TRaction Control (KTRC) with handlebar-mounted switch
• Launch Control Mode for holeshot advantage
• Smartphone connectivity—change engine mapping with RIDEOLOGY THE APP KX
• Dual injectors (upstream and downstream)
• Lightweight aluminium perimeter frame
• F21"/R18" wheels and off-road tyres, sealed chain, rear brake disc guard, side stand
• ERGO-FIT adjustable ergonomics for ride position optimisation

FACTORY-STYLE ENGINE COMPONENTS AND TUNING

Enhanced Race-Winning Performance: The KX250FX 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.

• POWER - Stronger Power Across the Rev Range: Even when a machine produces strong power, that power must be delivered in a way that riders can fully control if it is to translate into quick lap times. With this philosophy, the KX250FX cross-country racer pursues an engine character that is truly “fast” on the track. Revisions to the combustion chamber shape improves combustion efficiency and increases peak power, while an extended exhaust pipe and updated internal structure for the silencer contribute to stronger low-end torque, delivering increased power throughout the rpm range. Updated FI settings add linearity to improve power delivery.
• HYDRAULIC CLUTCH - Light & Responsive: Compared to a conventional clutch, the hydraulic clutch offers more direct feel and lighter lever action. Less play as the clutch heats up during heavy use results in more consistent feeling. Improved for 2027, the clutch spring load has been increased by 15%. This helps suppress clutch slip and allows the engine’s stronger output to be transferred more directly to the rear wheel, giving the rider a more forceful, forward-driving feeling.
• EFFICIENT FLOW - Symmetrically Aligned Intake and Exhaust: Symmetrically aligned intake and exhaust contribute to a strong over-run and smooth low-rpm torque characteristics. The intake offers a straight route for air-fuel mix to enter the cylinder, while the centrally positioned exhaust port lines up with the intake for high airflow efficiency—both contributing to performance. The optimised downdraft intake also adds to low-end performance.
• BALANCER - Single-Shaft Primary Balancer: A single-shaft primary engine balancer contributes to smoother power delivery and reduced vibration, which improves control, especially when exiting slower-speed corners.
• ELECTRIC START - Reliable Starting: Being able to restart an engine quickly during a race can mean the difference between keeping your lead or having to fight your way back through the pack. Electric start makes restarting the engine as easy as pushing a button.

FACTORY-STYLE CHASSIS COMPONENTS AND TUNING

Enhanced Stability: While retaining the previous model’s light, agile handling character, the KX250FX cross-country racer 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.

• FRAME - Lightweight Aluminium Perimeter Frame: The frame delivers both light, nimble handling and a composed character. Its optimised rigidity balance offers the front-end feel that helps riders when cornering, across a wide range of conditions.
• SILENCER - Short-Type Silencer: A new short-type silencer is featured on the KX250FX. The new unit is 50 mm shorter and 230 g lighter, contributing to mass centralisation and a lighter, more responsive handling character.
• SUSPENSION - Race-Ready Suspension: High-performance Showa ø49 mm inverted coil-spring fork and New Uni-Trak rear suspension offer race-ready suspension performance and adjustability to let riders tune their settings to suit conditions. Revised suspension settings front and rear offer increased ground-holding performance. The updated settings provide more confident performance on challenging surfaces and make it easier to respond to track conditions that change from lap to lap.Spring rates and damping settings optimised for the cross-country scene offer increased feedback, especially when riding on challenging trails.
• ADJUSTABLE ERGONOMICS - Get the Perfect Fit: Complementing the KX250FX’s slim ergonomics, the shrouds, side covers and rear fender feature smooth surfaces that eliminate hooking points, making it easier for the rider to slide back and forth.A choice of four handlebar positions (25 mm forward, 15 mm forward, standard and 10 mm back) and two footpeg positions (standard, 5 mm lower) allows riders to tailor their riding position to suit body size and preference. Factory-style ø28.6 mm (1-1/8”) Renthal aluminium Fatbar helps reduce vibration and shocks transmitted to the rider.
• GRIPS - ODI Lock-On Grips: Medium-compound ODI Lock-On Grips offer excellent grip feel, while their screw-type fastening system greatly facilitates the task of swapping grips.
• COVER - Quick-Release Side Cover: Left side cover can be removed without tools, facilitating access to the air filter element. The element is now secured with quick-release hooks (previously a wing bolt), which makes changing the air filter a much simpler task
• STYLING - Lighter, More Functional Front-End Styling: Updated front-end styling, accentuating the KX250FX’s sleek, flat design. The compact front number plate features a simple, slim design with minimal surface sculpting to convey a lighter impression. Rerouting the brake hose behind the plate also contributes to a cleaner front-end appearance. The front fender is 30 mm shorter than that of the previous model, with a more steeply slanted forward section that emphasises mass centralisation and overall unity. As before, Aggressive Green colouring—the bodywork and seat are both Lime Green—further highlights Kawasaki’s distinctive racing image and functional beauty.

CROSS-COUNTRY COMPONENTS AND TUNING

Optimised Performance: Cross-country-specific tuning for the suspension, complemented by a 21”/18” wheel combination fitted with enduro-type tyres, and convenient standard features like a side stand make the new KX250FX even more attractive for cross-country competitors.

• CROSS-COUNTRY WHEELS AND TYRES - Putting Power to the Ground: While the KX250F features F21”/R19” aluminium rims, the KX250FX uses a F21”/R18” combination that facilitates putting power to the ground. Dunlop AT81 enduro-type tyres complement the KX250FX-specific wheels and are well-suited to the situations encountered in cross-country riding.
• CROSS-COUNTRY EQUIPMENT - Protection & Convenience: A sealed chain suitable for long races and rear brake disc guard help add to the KX250FX’s trail-riding performance, while the convenient side stand comes in handy when stopping away from the paddock area.

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.

• POWER MODES - Two Modes to Suit Conditions or Preference: Using the Mode (M) button on the left handlebar, riders can quickly and easily switch between two engine maps (Normal, Aggressive) provided in the ECU. For the 2027 KX250FX, the FI settings in Aggressive mode were revised to deliver a sharper throttle response, offering characteristics that make it easier for riders to extract the strong acceleration they are looking for.
• KTRC - Kawasaki TRaction Control: Using the Traction (T) button on the left handlebar, riders can quickly and easily select from two levels (Weak, Strong) of traction control to suit conditions and preference. Riders may also elect to turn the system off.
• LAUNCH CONTROL MODE - Holeshot Advantage: Factory-style launch control system increases the chance of getting a good start by helping riders maximise traction when starting on a low-traction surface
• SMARTPHONE CONNECTIVITY - Easy Engine Tuning: Using the smartphone application “RIDEOLOGY THE APP KX,” riders are able to access and adjust their bike’s engine maps. Functionality (adjusting fuel and ignition timing) is similar to that offered by the accessory KX FI Calibration Kit used with previous models. Maintenance and setup logs are also available. RIDEOLOGY THE APP KX is not intended for use during vehicle operation. Only use RIDEOLOGY THE APP KX when the vehicle is not being operated and it is safe to do so.