Changes to the engine and its components aim to improve ... which is now constructed of steel instead of plastic. The new KX models inspire the design of the Kawasaki KLX230R S.

The 2025 KX250 and KX250X both get a redesigned engine. There's a new piston with a molybdenum coating, as well as a finger-follower valve train that Team Green wants you to know was designed by ...