Complex sentence: Its engine size and power output were designed to conform to learner restrictions of the time, and it was a version of the Honda CD200 Benly introduced in the late 1970s, but with four speed transmission and electric start only.
Split into simpler sentences: Its engine size and power output was designed to conform to learner restrictions of the time. It was a version of the Honda CD200 Benly introduced in the late 1970s, but with four speed transmission and had electric start only.