Category
RaceMachine
Competition-only machines, listed separately from road models.
YAMAHA
Yamaha YZ250
1974
Motocross
A production replica of the YZM250 (0W12) works machine that won the 1973 Motocross World Championship and All Japan Motocross Championship titles. It was the first production model with Monocross suspension, hence the name YZ250M. A competition-only machine with an air-cooled 246 cm³ two-stroke single and a 5-speed gearbox.

SUZUKI
Suzuki RG500 Grand Prix racer
1974
Race Machine
A road-racing machine developed by Suzuki for the 500 cc Grand Prix world championship. It used the square-four two-stroke layout proven in Suzuki’s 1960s Grand Prix programme and was designed by Makoto Hase. It finished second on its debut at the 1974 French Grand Prix and took its first win at the 1975 Dutch TT.
YAMAHA
Yamaha YZR500 (0WF9)
1994
Race Machine
A GP500 factory machine used in 1994 and 1995. A change of frame material optimised rigidity balance, and moving the air intake from the nose to inside the cowl improved aerodynamics; the 1995 version adopted ram-air pressurisation of the airbox. Liquid-cooled 499 cm³ two-stroke V4 with crankcase reed induction and a 6-speed gearbox.