|The KLX450R gets its key components straight out of our mighty KX450F motocrosser and adapts them for off-road racing. The KX450F’s high-powered, lightweight 4-stroke engine has been tweaked for more low-end torque and is mated to a special wide-ratio 5-speed transmission – and of course comes with an electric starter. The lightweight all-aluminium chassis has been thoroughly scrutinised for its ability to perform under the toughest of off-road racing conditions and to make it easier to control in a variety of terrain. The high-spec AOS inverted fork and superb rear suspension from the KX450F have been tuned for rougher conditions and to minimise rider fatigue over long distances. .