2019 Kawasaki KX450F
A number of firsts for a Kawasaki motocrosser, including electric start and a hydraulic clutchYamaha went big with its upgraded YZ250F last week, and now Kawasaki has come to the party with a revamped KX450F, which features finger-follower valve actuation, electric start and a hydraulic clutch – all firsts in the company in the motocross sphere.
Kawasaki claims an increase in peak power of 3.4hp (2.5kW), while a flatter torque curve “makes it easier to get on the gas”. The finger-follower valve actuation (a valve train designed by Kawasaki’s MotoGP and world superbike engineers) enables larger-diameter valves and more aggressive cams.
Downdraft-style intake and reduced friction loss (care of new plain bearings for the connecting rod big-end) further contribute to the power gains.
The KX450F has a launch control system, and there’s a choice of three engine maps. The accessory hand-held calibration tool enables riders to make changes to engine maps by plugging into the ECU without needing a PC or battery.
Kawasaki’s flagship motocrosser also has a new swingarm, a lightweight aluminium perimeter frame (which includes the engine as a stressed member) and the coil-spring forks have returned. The result is the KX450’s leanest chassis to date, and the whole bike weighs 110kg.
Ergonomically, the tank is lower and flatter, which Kawasaki says makes it easier to sit farther forward. Slimmer shrouds are easier to hold on to. There’s also a choice of four handlebar and two footpeg positions allows.
Colour is lime green. The anticipated release in Australia will be in late July 2018. Price will be announced closer to the release date.
Please see our Editorial Guidelines & Code of Ethics (including for more information about sponsored content and paid events). The information published on this website is of a general nature only and doesn’t consider your particular circumstances or needs.
