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The 1975 Yamaha RD350 and 1979 Yamaha XS1100 represent two chapters in Yamaha's storied history.
The 1975 Yamaha RD350 from Japan was powered by a 347cc 2-stroke twin producing 39hp at 7500rpm. Weighing 150.0kg (331 lbs) and with a seat height of 790mm, it was aimed at standard riders.
The 1979 Yamaha XS1100 by contrast offered 1101cc of DOHC inline-4 power, delivering 95hp at 8000rpm. Tipping the scales at 268.0kg (591 lbs) with a top speed of 210km/h (130 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 1975 Yamaha RD350 from Japan was powered by a 347cc 2-stroke twin producing 39hp at 7500rpm. Weighing 150.0kg (331 lbs) and with a seat height of 790mm, it was aimed at standard riders.
The 1979 Yamaha XS1100 by contrast offered 1101cc of DOHC inline-4 power, delivering 95hp at 8000rpm. Tipping the scales at 268.0kg (591 lbs) with a top speed of 210km/h (130 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
| 1975 Yamaha RD350 | 1979 Yamaha XS1100 | |
|---|---|---|
| Displacement | 347 cc | 1101 cc |
| Power | 39 hp | 95 hp |
| Torque | 33.0 Nm | 89.0 Nm |
| Cylinders | 2 | 4 |
| Top Speed | 165 km/h | 210 km/h |
| Quarter Mile | — | — |
| Dry Weight | 150.0 kg | 268.0 kg |
| Wet Weight | 163.0 kg | 290.0 kg |
| Seat Height | 790 mm | 810 mm |
| Wheelbase | 1345 mm | 1530 mm |
| Fuel Capacity | 13.0 L | 22.0 L |
| Gears | 6 -speed | 5 -speed |
The Verdict
Comparing these two Yamaha machines reveals the brand's evolution. The 1975 Yamaha RD350 laid the groundwork with 39hp, while the later 1979 Yamaha XS1100 pushed output to 95hp. From a collector's perspective, the 1975 Yamaha RD350 holds the edge with a 7/10 rating. Either way, both are worthy additions to any Yamaha collection.
About the 1975 Yamaha RD350
Yamaha released the 1975 Yamaha RD350 in 1975 with a 347cc 2-stroke twin powerplant making 39hp — a definitive standard motorcycle.
Full 1975 Yamaha RD350 Profile →About the 1979 Yamaha XS1100
Introduced in 1979, the 1979 Yamaha XS1100 features a 1101cc DOHC inline-4 engine producing 95hp, establishing itself as a notable touring motorcycle.
Full 1979 Yamaha XS1100 Profile →