Kawasaki’s first hydraulic clutch on a motocrosser offers more direct feel and lighter lever action.

Riders can choose from two positions to suit body size and preference. Adjustable footpeg brackets enable riders to lower their footpeg position 5 mm.

Fuel-injected engine offers hard-hitting  power across the rev-range while ensuring stable fuel-metering in all conditions.
Changes to the intake ports, intake valves and a new offset cylinder deliver even more power.

Works-base bridged-box bottom piston (unique Kawasaki feature used for the first time on a mass-production motocrosser on the 2010 KX450F) is just one of many features inspired by our factory racers.

Matching the KX450’s increased power, increased front and rear traction ensure the bike can put power to the ground and get around corners quickly. A largerdiameter front axle (a hint from our racing teams) helps at the front, while revised rear suspension layout and new linkage ratios benefit the rear.

Super-hard titanium coating protects the fork from wear abrasion. Self-lubricating alumite coating creates a hard, low-friction surface on the outer tube, protecting the aluminium surface and further reducing friction to promote smooth fork action.

With its factory style components and tuning – including the adoption of a new finger follower valve actuation system - the new engine of the KX450 is now even more powerful with an additional 3.4 PS to keep riders ahead of the pack.

A choice of four positions allows riders to tailor their riding position. Factory-style Renthal handlebar and pad come standard.

Lightweight ECU was designed specifically to withstand the rigors of motocross racing. ECU contains three engine maps (plus a fourth for Launch Control Mode). Settings for the three maps can be reprogrammed with the optional KX FI Calibration Kit.

Factory-style launch control system increases the chance of getting a good start by helping riders maximise traction when starting on a slippery surface. 

Being able to restart an engine quickly after a spill can mean the difference between keeping your lead, or having to fight your way back through the pack.

Handling suspension duties up front is a new highperformance ø49 mm inverted coil-spring fork. The large diameter inner tubes (the same size as on our factory racers) enables the use of large damping pistons, delivering smooth action and firm damping.

Weighing in at 108.7 kg, the new KX450F is over 3 kg lighter than its predecessor. The weight reduction comes care of a thorough re-evaluation of both engine and chassis components.

Aggressive new bodywork makes the bike look more compact and is complemented by factory-style design and graphics.

All-new minimalist bodywork includes even slimmer radiator shrouds thanks to re-oriented radiators, a flatter seat and tank, and smooth seamless design that make it easier for riders to move around.

Oversized ø270 mm front disc delivers strong stopping power and excellent controllability. The factory-style front and rear petal brake discs also contribute to high-quality sporty looks.

KX FI Calibration Controller, a portable handheld calibration tool, enables riders to make changes to engine maps by plugging into the ECU without needing a PC or battery. Comes equipped with seven preset map settings.

Lightweight, compact Li-ion battery helps keep weight gain to a minimum.

Aluminium perimeter frame is a narrower across the main beams, considerably lighter, and features revised rigidity contributing to greater front-end feel.