Both red machines’ air-cooled SOHC four-stroke 125cc single-cylinder engines are fed by 22mm throttle bodies. Gearbox on both models is a four-speed. Built around steel twin-spar frames ...

Read more: The Most Reliable Honda Models Ever Built, Ranked The Yamaha Zuma is powered by a 125cc liquid-cooled, 4-stroke engine. It has a 52.0mm bore, a 58.7mm stroke, an 11.2:1 compression ...