Here is the complete engine top proposed by ATHENA to rebuild your KAWASAKI KLX, KX in 450cc 4 stroke from 2006 to 2017. This kit is sold complete as on the picture with its axle, clips, ring, piston, gasket and cylinder. This kit is not a big bore. It has the same characteristics as the original. You will not have any gain of performance on your motorcycle has by the refurbishment of it. It is of course of excellent quality as usual at ATHENA. The nikasil is really excellent to guarantee you an increased reliability. A detailed list of vehicles and year is below.