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The 1974 Yamaha RD200 and 1978 Yamaha SR500 represent two chapters in Yamaha's storied history.
The 1974 Yamaha RD200 from Japan was powered by a 195cc 2-stroke twin producing 22hp at 7500rpm. Weighing 123.0kg (271 lbs) and with a seat height of 770mm, it was aimed at standard riders.
The 1978 Yamaha SR500 by contrast offered 499cc of SOHC single power, delivering 32hp at 6500rpm. Tipping the scales at 158.0kg (348 lbs) with a top speed of 145km/h (90 mph), it offered a distinct riding experience. 1970s bikes from the Japanese superbike revolution are increasingly sought after. Clean, original examples have seen significant value appreciation.
The 1974 Yamaha RD200 from Japan was powered by a 195cc 2-stroke twin producing 22hp at 7500rpm. Weighing 123.0kg (271 lbs) and with a seat height of 770mm, it was aimed at standard riders.
The 1978 Yamaha SR500 by contrast offered 499cc of SOHC single power, delivering 32hp at 6500rpm. Tipping the scales at 158.0kg (348 lbs) with a top speed of 145km/h (90 mph), it offered a distinct riding experience. 1970s bikes from the Japanese superbike revolution are increasingly sought after. Clean, original examples have seen significant value appreciation.
Specifications Comparison
| 1974 Yamaha RD200 | 1978 Yamaha SR500 | |
|---|---|---|
| Displacement | 195 cc | 499 cc |
| Power | 22 hp | 32 hp |
| Torque | 17.0 Nm | 37.0 Nm |
| Cylinders | 2 | 1 |
| Top Speed | 130 km/h | 145 km/h |
| Quarter Mile | — | — |
| Dry Weight | 123.0 kg | 158.0 kg |
| Wet Weight | 135.0 kg | 172.0 kg |
| Seat Height | 770 mm | 800 mm |
| Wheelbase | 1260 mm | 1390 mm |
| Fuel Capacity | 11.0 L | 12.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
Comparing these two Yamaha machines reveals the brand's evolution. The 1974 Yamaha RD200 laid the groundwork with 22hp, while the later 1978 Yamaha SR500 pushed output to 32hp. From a collector's perspective, the 1978 Yamaha SR500 holds the edge with a 7/10 rating. Either way, both are worthy additions to any Yamaha collection. Parts availability is moderate for the 1974 Yamaha RD200 and good for the 1978 Yamaha SR500 — an important factor for any restoration project.
About the 1974 Yamaha RD200
A standard motorcycle from 1974, the 1974 Yamaha RD200 delivers 22hp from its 195cc 2-stroke twin engine.
Full 1974 Yamaha RD200 Profile →About the 1978 Yamaha SR500
The 1978 1978 Yamaha SR500 packs a 499cc SOHC single engine with 32hp into a standard motorcycle package from Yamaha.
Full 1978 Yamaha SR500 Profile →