Yamaha R5 350 Was In Many Respects The Crown Jewel Of Yamaha’s Continuing 2 Stroke Program

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 TU 250 X and cruiser styled GZ 250. 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. That wasn’t the case back in the early 1970s, when small bore bikes still ruled and the so called 21 inchers 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. Despite the introduction of its first ever 4 stroke, the 650cc parallel twin Yamaha XS1, Yamaha wasn’t about to walk away from its 2 stroke twins and singles which had brought Yamaha success in the consumer marketplace and on the track, and Yamaha knew there was still a lot of performance and dollars to wring out of its smaller bikes. Yamaha had introduced its first big 2 stroke, the 305cc Big Bear in 1966. That was followed a year later with the all new YR1 Grand Prix, whose short stroke 348cc twin benefited heavily from lessons learned on the track, and finally in 1970 the YR5 or the Yamaha R5 350 as it was known in the states. The Yamaha R5 350 was in many respects the crown jewel of Yamaha’s continuing 2 stroke program. While it put out the same 36 horsepower as the previous year’s twin, an increase in torque and other refinements meant it easily boasted the best performance of any 2 stroke Yamaha had ever made. Where previous Yamaha 2 stroke twins had been very peaky with a narrow power band ushering in a rush of acceleration at high revs but leaving engine response flat at lower engine speeds, the R5 could deliver usable power from as low as 3,000rpm with peak torque of 28 pound feet developed at 6,500rpm. For the average rider this was a huge improvement. Gone were the days of having to rev the engine to a scream before slipping the clutch to achieve any sort of smooth, low-speed take-off or to pull cleanly once on the move. The R5 pulls like a 500 when you twist the grip in fifth, said Cycle World in appreciation of the R5’s low speed engine performance.
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[@eliinthewolverinestate6729]

I have a rt3 360 and a rd3 250. Even learned to ride on a 73 125cc yamaha.

[@Keith-rk4td]

My Father had one of these. He used to hill climb with it. Knobby on the back.😂

[@matthewetmoi8436]

Background music sucks and so does the commentary.

[@davidderby6951]

R5 three hundred fifty, notfive thousand...

[@chriswhatley9814]

AI garbage

[@saltygrin2]

What AI crap... And how 'bout the Royal Enfield 350? 411? Triumph 400?

[@pattoallen1981]

Rd was better than r5

[@ecannon649]

Weak sauce unwatchable.