The Honda RS750 was by far the most successful Japanese flat tracker of all time, winning plenty of AMA hardware in the mid-’80s, but a decade earlier, Yamaha had its own success story with the XS650, thanks to King Kenny Roberts.
Racers used Indians, Brit bikes and even Japanese bikes. The Harley-Davidson XR750 is the winningest flat track bike in history, but H-D wasn’t the only machine in that scene.