1977 YZR1000: A 90° V4 prototype for endurance racing, this was Japan's first V4 engine but was blocked from competition by rule changes and remained an exhibition model.
1982 0W61: Yamaha's first factory V4 in premier-class racing (500cc two-stroke), known for its powerful but challenging delivery and influencing future V4 designs.
1990s V4 GP Bikes: Yamaha successfully raced V4 Grand Prix bikes in the late 80s and early 90s, with Wayne Rainey winning titles on them.
239K likes, 1,381 comments - yamahamotogp on September 12, 2025: "The first roar of the Yamaha V4-Powered Prototype 👹💙 #PlanV | #TheBlueShift | #YamahaFactoryRacing | #MotoGP | #YamahaMotoGP".
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