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KX design philosophy is simple: put mid level to expert riders on the top step of the podium. This philosophy has not changed since the creation of the KX brand over 40 years ago. With 32 AMA Supercross titles to its credit, the most of any manufacturer, KX has a proven record of powering champions. Significant weight reduction to engine and chassis for 2016 makes the KX450F the lightest machine in its class. The resultant sharper handling is complemented by a slimmer chassis and an even more powerful engine, further increasing its circuit potential.
The 2018 KX450F is Kawasakis flagship model with a powerful, nimble, and technologically advanced heritage. Built with inspiration from Kawasakis factory race team, the KX450F motorcycle is simply race-ready.
Kawasakis powerful race-winning motocross bike is equipped with a potent, lightweight engine package that is derived from its factory race team efforts. The 4-stroke, single cylinder, DOHC, water-cooled 449cc engine has been designed for instantaneous response at the crack of the throttle and continues through to its strong top-end pull for peak performance.
The cylinder is offset 8.5mm forward to reduce mechanical loss through friction from the piston movement, thus enabling more efficient power generation.
36mm titanium intake valves, similar to those found in Kawasaki Ninja sportbikes, have a slim throat angle and reduced recess to increase high-RPM performance. Intake cam settings maximize low-RPM performance. A bridged-box piston design, which features a 12:8:1 compression ratio, is similar to those seen on the Monster Energy Kawasaki race teams factory race bikes and matches the intake valve shape.
Contributing to the race-winning engine characteristics, the digital fuel injection system of the KX450F features a coupler package that has set the industry standard. Each KX450F motorcycle comes standard with three different couplers, easily allowing riders to change fuel injection and ignition mapping to suit their riding style or track conditions.
To go along with its race proven performance, the 2018 KX450F motorcycle features aggressive styling along with in-mold graphics on the radiator shrouds that retain the racy look necessary when finishing at the top of its class.
A large synthetic skidplate offers a level of protection for the bottom of the 2018 KX450F motorcycles class-leading engine, with minimal weight, and features oval holes in order to facilitate mud removal.
>> Bike Torque has been providing motorcycle sales and servicing in the Ruapehu & King Country regions since 1986