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The 1977 BMW R100RS and 1980 BMW R80G/S represent two chapters in BMW's storied history.
The 1977 BMW R100RS from Germany was powered by a 980cc OHV flat-twin producing 70hp at 7250rpm. Weighing 210.0kg (463 lbs) and with a seat height of 810mm, it was aimed at touring riders.
The 1980 BMW R80G/S by contrast offered 798cc of OHV flat-twin power, delivering 50hp at 6500rpm. Tipping the scales at 186.0kg (410 lbs) with a top speed of 165km/h (103 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 1977 BMW R100RS from Germany was powered by a 980cc OHV flat-twin producing 70hp at 7250rpm. Weighing 210.0kg (463 lbs) and with a seat height of 810mm, it was aimed at touring riders.
The 1980 BMW R80G/S by contrast offered 798cc of OHV flat-twin power, delivering 50hp at 6500rpm. Tipping the scales at 186.0kg (410 lbs) with a top speed of 165km/h (103 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
| 1977 BMW R100RS | 1980 BMW R80G/S | |
|---|---|---|
| Displacement | 980 cc | 798 cc |
| Power | 70 hp | 50 hp |
| Torque | 72.0 Nm | 52.0 Nm |
| Cylinders | 2 | 2 |
| Top Speed | 200 km/h | 165 km/h |
| Quarter Mile | — | — |
| Dry Weight | 210.0 kg | 186.0 kg |
| Wet Weight | 228.0 kg | 200.0 kg |
| Seat Height | 810 mm | 850 mm |
| Wheelbase | 1465 mm | 1465 mm |
| Fuel Capacity | 24.0 L | 21.5 L |
| Gears | 5 -speed | 5 -speed |
The Verdict
Comparing these two BMW machines reveals the brand's evolution. The 1977 BMW R100RS laid the groundwork with 70hp, while the later 1980 BMW R80G/S pushed output to 50hp. Both share equal collector appeal at 8/10. Either way, both are worthy additions to any BMW collection.
About the 1977 BMW R100RS
A touring motorcycle from 1977, the 1977 BMW R100RS delivers 70hp from its 980cc OHV flat-twin engine.
Full 1977 BMW R100RS Profile →About the 1980 BMW R80G/S
The 1980 1980 BMW R80G/S packs a 798cc OHV flat-twin engine with 50hp into a dual-sport package from BMW.
Full 1980 BMW R80G/S Profile →