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

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

The new engine boasts an increase in peak power of approximately 2.5 kW (3.4 PS), while a flatter torque curve makes it easier to get on the gas.

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

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.

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.

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.

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.

Complementing the powerful engine, light, nimble handling contributes to the KX450’s quick lap times. While the addition of electric start and the return to a coil-spring fork add weight, efforts were made to keep the weight gain to a minimum. The result is the KX450’s leanest chassis to date, and a highly-competitive, low overall weight of only 110.0 kg – a gain of only 1.3 kg.

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.

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.

All-new bodywork (except the front fender and number plate) was designed to facilitate rider movement. Long, smooth surfaces make it easy to slide back and forth. The tank is lower and flatter, making it easier to sit farther forward. Slimmer shrouds are easier to hold on to. Even the engine covers are smooth so that they do not impede rider movement.

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.

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

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

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.

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

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