Kawasaki KX450F has introduced a variant version of 2012. KX is a family of specific Kawasaki dirt bike racing competition alias, so do not be surprised if the whole development is concentrated on the performance!
Starting from the engine, Kawasaki installing new pistons and camshafts to create power diputaran middle to the top better at the same time expand the powerband. Piston ring is made thinner so that minimal friction.
Other changes are new sections on knlapot silencernya made 60 mm shorter than the 2011 version. Not just a matter of performance, with a shorter silencer expected overall weight of the motor leaning more in the middle so it supports handlingnya.
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