Drag site icon to your taskbar to pin site. Learn More

2014 Kawasaki KX250F & KX450F First Look

Monday, June 17, 2013
Kawasaki has released the details on its 2014 KX250F and KX450F motocross machines. The smaller of the two gets a handful of notable updates, while the 2013 450 Motocross Shootout winner gets a dose of bold new graphics. Both machines received tweaks in 2013, though it was expected not much would be done to the ’14 models.

KX250F

For 2014 the bike with the most wins in the quarter-liter class gets the launch control system that was implemented on the KX450F in 2012. This is a first in the 250 class and the KX250F is only the second machine in the MX world to have this holeshot helper. Kawi’s launch control works by retarding the ignition timing in first and second gear to meter the amount of torque fed to the rear tire. Just a push of a button is all that is needed to activate the Launch Control Mode, and once the bike is shifted into third gear the system is automatically deactivated. Kawasaki claims the technology is most beneficial on slick starts, such as from a concrete pad.

The chassis gets a tweak via the front engine mounts. The high-tensile steel plates are 29% thinner than the 2013 units. Just this one change to the frame gives the KX250F a better mix of chassis rigidity and gives improved feedback and front-end grip to the rider. Additionally the Showa SFF fork gets revised settings for enhanced damping performance in the initial and mid-stroke. The rear shock gets tuned to match the changes to the fork and frame.

Team Green also turned its attention to the transmission of the 2014 KX250F. Kawasaki’s engineers have added one extra dog to the transmission gears for a total of four. This, combined with new fork groves in the shift-drum, are claimed to enhance shifting smoothness and rider feel at the lever. The countershaft sprocket is now held in place with a nut and washer instead of a circlip for a more positive interface between the sprocket and countershaft.

In the engine department, an upgraded crankcase oil jet delivers an optimized stream of oil to the underside of the piston for increased cooling. The throttle body has been re-tuned to improve the airflow from a closed throttle, resulting in a smoother idle and response of the bottom.

Lastly the KX250F’s grips get a new low-density compound for rider comfort during long motos.

KX450F

The 2013 KX450F was the clear-cut winner in our 2013 450 Motocross Shootout, and Team Green has decided not to mess with what works. Last year the big Kawi got Kayaba Pneumatic forks, a stiffer swingarm, new ECU settings and upgraded engine internals. This year it gets the new soft-compound grips and new decals on the shrouds. While this isn’t much, we expect in won’t go down without a fight when our 2014 shootout rolls around.

Both the 2014 Kawasaki KX250F and 2014 Kawasaki KX450 are available in Kawasaki’s trademark Lime Green. Pricing is TBD. We will be sampling both machines this coming week at Competitive Edge and will report our impressions soon after.
Photo Gallery
View Gallery
View Gallery
View Gallery
View Gallery
View Slideshow
Other Dirt Bike First Looks
2015 Kawasaki KX250F First Look
Kawasaki updates its quarter-liter motocross platform for 2015, with engine and suspension updates.
2015 Kawasaki KX450F First Look
Kawasaki updates its KX450F motocross platform with new piston and revised ECU settings, as well as new Showa air fork.
2015 Husqvarna Off-Road Line First Look
Husqvarna expands its range of available models to 14 in the North American market in 2015, adding two new dual-sport motorcycles, a low displacement 2-stroke enduro and a new 350cc motocrosser.
2015 Beta RR   RS First Looks
Beta releases information on its new 2015 RR and RS models, which includes a first ever production model to include electronic fuel injection, the Beta 350RR EFI.
2015 Suzuki DR200S First Look
Suzuki announces updates to its DR200S dual sport for 2015, including ergonomic tweaks to improve rider comfort. The company also returns its low-displacement off-roader, the DR-Z125L.
2015 KTM Off-Road Line First Look
KTM has updated its 2015 XC, XC-W and EXC off-road models. Read on to find out what has changed.
2015 Yamaha YZ85  YZ125  YZ250 First Look
Yamaha gives its entire two-stroke dirt bike line, including the YZ85, YZ125, and YZ250 a makeover for 2015.

Login or sign up to comment.