The Clean Side of Dirty: 1985 Yamaha RZ500
The legendary Yamaha RZ500 – the twin-crank, V-4, 500cc two stroke GP bike for the street – never officially came into the United States. By the late 1970s the EPA had their sooty little hands in, well, everything, and raucous power plants such as internal combustion two strokes were strictly off the list. Yamaha tried…
