Yamaha YZM500

The Yamaha YZM500 is a Motocross bike.

This bike was originally engineered for 1983 500cc world champion Hakan Carlqvist, but he was fired by Yamaha at the end of 1986 after having modified his 1986 bike without his team's authorization. Jacky Vimond won the 500cc Sweden GP overall in 1988 using the YAMAHA YZM500.

Yamaha used the general look of the YZM500 to design the 1988 YZ250 but did not use the aluminum frame on any bike before 2005.