1976 Yamaha RD400

In 1976, Yamaha launched the 1976 Yamaha RD400 — a standard motorcycle that would come to define an era of motorcycling. Hailing from Japan, it combined Japan engineering with standard motorcycle appeal.

At the heart of the 1976 Yamaha RD400 sits a 398cc 2-stroke twin engine producing 40 horsepower at 7000 rpm. The twin-cylinder powerplant features a twin-cylinder layout with air-cooled cooling, fed by 2x Mikuni carburetors. Power reaches the rear wheel through a 6-speed transmission and chain final drive.

Built around a steel double cradle frame, the 1976 Yamaha RD400 suspends its 153 kg (337 lbs) on telescopic fork forks and twin shock rear units. Braking relies on single disc at the front and drum at the rear, with a 1360 mm wheelbase providing stability.

Performance-wise, the 1976 Yamaha RD400 achieves a claimed top speed of 168 km/h (104 mph). With a fuel capacity of 14.0 liters, it offers reasonable range for standard motorcycle duties. The seat height of 790 mm makes it comfortable for most riders.