Fresh from winning the 2026 MXGP World Championship with Romain Febvre and the KX450, Kawasaki has unveiled its duo of class-leading adult motocross machines for the 2027 season, and the news is that “F is back”.

Allocated the suffix F in 2027, the new racers are a formidable duo with an extensive list of changes and updates to both machines focused on maintaining their place at the front of the pack, be that in motocross, supercross or cross-country racing.

Reflecting feedback from current World Champion, Romain Febvre, the new KX450F is festooned with changes and updates amongst which the most notable is a brand-new frame and swinging-arm assembly. This creates a longer wheelbase to offer improved rear-end traction and controllability plus enhanced stability thanks to revised front and rear suspension settings. Along with engine and other changes, the overall package contributes to improved all-round performance.

Speaking of the engine, thanks to revised intake and exhaust systems and optimised fuel injection settings, performance has improved with a more aggressive engine feeling.  Stronger low-end power feel is complemented by improved power in the mid-high range such as when accelerating out of high-speed corners.

On the tech side, the Power Mode button on the left handlebar allows riders to quickly and easily switch between two engine map settings.  Additionally, two traction control (KTRC) settings can be selected from a handlebar switch that – along with the Power Mode setting - can be fine-tuned via the updated RIDEOLOGY THE APP KX2 once it is loaded on the riders’ smartphone. A factory-style Launch Control mode offers an updated system that includes a rev-limit control function allowing riders to focus on the best possible start.

Making a 2027 debut is a Brembo front and rear braking package with both calipers and master cylinders being Brembo, complemented by steel-mesh brake hoses. Adding convenience, both the handlebar and footpegs are Kawasaki ERGO-FIT multi-adjustable, facilitating maximum control.

Rounding out the larger machine is a new slim bodywork boasting a colour scheme maximising the Lime Green impact but adding blue for the new season to unify across Kawasaki’s performance motorcycle models. 

Sharing that fresh new vibrancy is the 2027 KX250F, a machine that also enjoys an impressive slew of updates for the upcoming season.

Refinements to the combustion chamber design, an increased exhaust pipe length and an optimised smaller-bodied silencer contribute to stronger power across the rev range for 2027. A smoother, more hemispherical combustion chamber profile allows the initial flame kernel to grow more rapidly after ignition, increasing combustion speed and improving combustion efficiency.  As a result, peak power increases by 0.5 kW and peak torque by 0.3 Nm.

Complementing these changes, updated FI settings offer sharper, more linear throttle response.  And to cope with the upgrades, Kawasaki engineers have also added a larger-capacity hydraulic clutch assembly with clutch spring load increased by 15% in order to deliver the prodigious power to the ground smoothly and progressively.

Enjoying a bodywork refresh that includes the number plate and front fender boasting a new, simple and lightweight design that includes a blue accent in addition to the characteristic Lime Green, the quarter-litre model also comes equipped with selectable Power Mode and KTRC Traction Control plus Launch Control while look, feel and efficiency are on point with updated coolant hose and front brake hose routing plus internal setting revisions for both front and rear suspension components.  (Naturally, the electronic rider aids can all be adjusted via the smartphone application RIDEOLOGY THE APP KX.)

Concluding the suite of 250 and 450 offerings for 2027 are the KX250FX and KX450FX cross-country models with their own specific suspension settings and clever touches such as a sealed chain, a side stand and a rear-mounted power take-off to facilitate the fitting of a rear light when regulations require and hand guards on the KX450FX and, for the KX250FX, a rear brake disc guard.

Proving that you cannot rest on your laurels, Kawasaki has used the energy release of winning the MXGP World Championship to refine its family of adult motocross machines resulting in an even more compelling offering from Team Green dealers for the upcoming season. KXF – the bike that builds champions. 

Colour Options:*

2027 KX450F/KX450FX/KX250F/KX250FX

Lime Green

*Please check with your local Kawasaki dealer regarding colour and model availability in your territory