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The 1979 Yamaha XS1100 and 1984 Yamaha FJ1100 represent two chapters in Yamaha's storied history.
The 1979 Yamaha XS1100 from Japan was powered by a 1101cc DOHC inline-4 producing 95hp at 8000rpm. Weighing 268.0kg (591 lbs) and with a seat height of 810mm, it was aimed at touring riders.
The 1984 Yamaha FJ1100 by contrast offered 1097cc of DOHC inline-4 power, delivering 125hp at 9000rpm. Tipping the scales at 245.0kg (540 lbs) with a top speed of 240km/h (149 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 1979 Yamaha XS1100 from Japan was powered by a 1101cc DOHC inline-4 producing 95hp at 8000rpm. Weighing 268.0kg (591 lbs) and with a seat height of 810mm, it was aimed at touring riders.
The 1984 Yamaha FJ1100 by contrast offered 1097cc of DOHC inline-4 power, delivering 125hp at 9000rpm. Tipping the scales at 245.0kg (540 lbs) with a top speed of 240km/h (149 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
| 1979 Yamaha XS1100 | 1984 Yamaha FJ1100 | |
|---|---|---|
| Displacement | 1101 cc | 1097 cc |
| Power | 95 hp | 125 hp |
| Torque | 89.0 Nm | 100.0 Nm |
| Cylinders | 4 | 4 |
| Top Speed | 210 km/h | 240 km/h |
| Quarter Mile | — | — |
| Dry Weight | 268.0 kg | 245.0 kg |
| Wet Weight | 290.0 kg | 265.0 kg |
| Seat Height | 810 mm | 800 mm |
| Wheelbase | 1530 mm | 1510 mm |
| Fuel Capacity | 22.0 L | 22.0 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
Comparing these two Yamaha machines reveals the brand's evolution. The 1979 Yamaha XS1100 laid the groundwork with 95hp, while the later 1984 Yamaha FJ1100 pushed output to 125hp. Both share equal collector appeal at 5/10. Either way, both are worthy additions to any Yamaha collection. Parts availability is moderate for the 1979 Yamaha XS1100 and good for the 1984 Yamaha FJ1100 — an important factor for any restoration project.
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 →About the 1984 Yamaha FJ1100
Born in 1984, the 1984 Yamaha FJ1100 is a 1097cc four-cylinder touring motorcycle producing 125hp from Yamaha.
Full 1984 Yamaha FJ1100 Profile →