Yamaha YDS-1The 1959 Yamaha YDS-1 was Japan's first sports bike, designed for thrilling rides. Using the YD-1 as inspiration, the YDS-1 stepped things up with a 246cc, 2-stroke twin-cylinder powerplant delivering 20 horsepower at 7,500 rpm. That may seem modest today, but back then, it was considered impressive power. But what really made the YDS-1 stand out was its 5-speed gearbox—the first ever fitted to a Japanese production motorcycle. Yamaha enhanced this performance setup with a combination-type instrument panel that included a tachometer, placing the fundamentals right where riders need them. Sporting a slim cradle frame and weighing approximately 304 pounds (138 kg), it was nimble yet sturdy enough to handle roads well. The YDS-1 wasn't confined to the streets; it was built for the racetrack as well. For the Asama Highlands Race in Japan, it was further developed into the YDS-1 Asama Spec, which had race-tuned components and a bigger fuel tank. With an upgraded engine producing over 25 horsepower at 8,000 rpm, the Asama Spec provided sharper handling, making it a top contender on the track.Yamaha YG1The YG1, produced in 1963, was built for both fun and function. It was powered by a 75cc, single-cylinder engine that generated about 6.5 horsepower at 7,000 rpm. A rotary disc valve intake system set the engine apart, helping it stay cooler and run more reliably. When coupled with a light weight of about 154 pounds, the YG1 was easy to handle in any riding environment. It also had a backbone-type monocoque frame that contributed to its low weight, improving control.The YG1 was fitted with water-resistant drum brakes, which helped in terms of safety on the road. Not just for looks, the megaphone-type muffler added to the bike's sleek design while giving it a distinct exhaust note. The practicality of the YG1 extended as far as its maintenance parts. The carburetor, air cleaner, and clutch parts were designed to be serviced easily, keeping downtime and maintenance costs to a minimum. Featuring clean lines, a slim profile and a no-fuss design approach, the YG1 was quick and efficient—everything an occasional commuter or casual rider needed in a small-displacement bike.Yamaha YR-1Yamaha's first foray into the 350cc segment came with the 1967 YR-1. It powered up with a two-stroke engine pushing approximately 36 horsepower — a strong kick for a mid-size bike at the time. This made the YR-1 not just fast and fun to ride, but also versatile enough to be raced and used on any road. The five-speed transmission also allowed easy shifts on the YR-1. Plus, there was Yamaha's Autolube system—as the name suggests, that meant riders didn't need to fuss with mixing the oil with the fuel, as the motorcycle did it for them. And for those who preferred their setup a certain way, adjustable foot controls allowed for left or right shifting and braking.In terms of style, the YR-1 was where bold met refined. It came in striking candy red, blue, and black with nice finishes that made it look upmarket. The dual-cradle chassis stabilized the bike at high speeds, and the well-tuned suspension soaked up bumps nicely for daily rides. The handlebars and seat were set for comfort, so riders could cover long distances without feeling cramped. The YR-1 was more than just a stylish bike, however. Its DNA found its way into multiple Yamaha race bikes competing in the 350cc motorcycle class.
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