Uploaded July 2026 | Updated September 2026, 2 days ago
Bill Ivy’s 250cc 4-cylinder motorcycle was the revolutionary Yamaha RD05A (and its predecessor, the RD05). Developed in the late 1960s, this exotic 2-stroke V4 was built to challenge the mighty 6-cylinder Hondas.
Bill Ivy’s 250cc 4-cylinder motorcycle was the revolutionary Yamaha RD05A (and its predecessor, the RD05). Developed in the late 1960s, this exotic 2-stroke V4 was built to challenge the mighty 6-cylinder Hondas.
