The Yamaha R5 350 Twin

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The Yamaha R5 350 Twin.
The Yamaha R5 350 Twin.
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The Honda CB350 was one of the most popular motorcycles of the late 60s and early 70s.
The Honda CB350 was one of the most popular motorcycles of the late 60s and early 70s.
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Bridgestone is primarily known for making tires, but their Bridgestone 350 GTR was a quality bike.
Bridgestone is primarily known for making tires, but their Bridgestone 350 GTR was a quality bike.

Yamaha R5 350 Twin
Years produced: 1970-1972
Claimed power: 36hp @ 7,000rpm
Top speed: 91mph (period test)
Engine type: 347cc air-cooled 2-stroke parallel twin
Transmission: 5-speed
Weight: 322lb (dry)
MPG: 30-40
Price then: $779 (1971)
Price now: $1,000-$2,500

Try to find a 350cc or smaller streetbike today like the Yamaha R5 350 Twin and you’ll discover the pickin’s are slim. Honda has only one, the 234cc Nighthawk; Kawasaki two, the 124cc Eliminator 125 and the 249cc Ninja 250R; Suzuki two, the 249cc retro-style TU250X and cruiser-styled GZ250. And Yamaha? Ignoring the 249cc V-twin cruiser in its new Star Motorcycle line, you won’t find a single 350cc or smaller machine carrying the Tuning Fork logo.

The 21-inchers

That wasn’t the case back in the early 1970s, when small-bore bikes still ruled and the so-called 21-inchers (350cc = 21.35ci, hence the 21-inchers moniker) were among the hottest contenders for the motorcyclist’s dollar. Besides a smorgasbord of small-bore bikes from Italy, England and Germany, there was a full plate of small bikes available from Japan, including Yamaha.

By 1970, Yamaha had emerged as one of the leading Japanese motorcycle makers, behind Honda but ahead of Kawasaki and Suzuki. While Honda continued to embrace the 4-stroke ideal, Yamaha, like its other Rising Sun rivals, was still putting most of its faith in 2-stroke technology.

  • Published on Oct 7, 2009
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