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The 1978 Yamaha SR500 and 1979 Yamaha XS1100 represent two chapters in Yamaha's storied history.
The 1978 Yamaha SR500 from Japan was powered by a 499cc SOHC single producing 32hp at 6500rpm. Weighing 158.0kg (348 lbs) and with a seat height of 800mm, 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 1978 Yamaha SR500 from Japan was powered by a 499cc SOHC single producing 32hp at 6500rpm. Weighing 158.0kg (348 lbs) and with a seat height of 800mm, 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
| 1978 Yamaha SR500 | 1979 Yamaha XS1100 | |
|---|---|---|
| Displacement | 499 cc | 1101 cc |
| Power | 32 hp | 95 hp |
| Torque | 37.0 Nm | 89.0 Nm |
| Cylinders | 1 | 4 |
| Top Speed | 145 km/h | 210 km/h |
| Quarter Mile | — | — |
| Dry Weight | 158.0 kg | 268.0 kg |
| Wet Weight | 172.0 kg | 290.0 kg |
| Seat Height | 800 mm | 810 mm |
| Wheelbase | 1390 mm | 1530 mm |
| Fuel Capacity | 12.0 L | 22.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
Comparing these two Yamaha machines reveals the brand's evolution. The 1978 Yamaha SR500 laid the groundwork with 32hp, while the later 1979 Yamaha XS1100 pushed output to 95hp. 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 good for the 1978 Yamaha SR500 and moderate for the 1979 Yamaha XS1100 — an important factor for any restoration project.
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 →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 →