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A Yamaha social media post marking July 15 as the SDR's birthday drew a wave of fan responses. The SDR was a 1987 195cc water-cooled two-stroke weighing just 105kg and making 25.0kW, priced at ¥379,000 new. It was built for only about two years, and that rarity is part of why riders still love it.
Read in the context of a production run barely two years long, the SDR's popularity isn't just nostalgia. A 105kg curb weight and two-stroke sharpness that manufacturing realities couldn't sustain for long — this is a textbook case of a bike remembered precisely because it was short-lived. What that era demanded was a sharpness mass production couldn't hold onto.
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379,000 yen for 25kW output was actually pretty impressive for its era.
What would the SDR compare to among today's bikes?
A two-stroke revival feels like a tough sell environmentally though.
That's why people are saying a four-stroke revival would be fine too.
A friend of mine had an SDR back then. 105kg is still an insane number even now.
Two-stroke lightness is everything, I get why people want it back.
