The Shocking Truth Why Two-Stroke Multi-Cylinder Bikes Were Banned From AMA Racing

What made Japanese two-stroke motorcycles so terrifyingly fast that American racing officials had no choice but to ban them entirely? In this video, we explore the dramatic era when machines like the Suzuki GT750 Water Buffalo, Kawasaki H2R, and Yamaha TZ750 pushed motorcycle technology beyond what riders, tracks, and regulations could handle. From the politically charged Class C rules that protected Harley-Davidson for decades to the screaming two-stroke triples that made even legendary racers like Kenny Roberts fear for their lives, this is the story of how Japanese engineering excellence collided with American motorsport tradition—and why these magnificent, dangerous machines were ultimately deemed too fast to race. #motorcycles #racing #1970s #twostroke #vintagemotorcycles