1981 BMW R 80 GS

Specifications
- Category
- Allround
- Displacement
- 797.0 ccm (48.63 cubic inches)
- Displacement (cc)
- 797.00
- Engine details
- Two cylinder boxer, four-stroke
- Power
- 50.0 HP (36.5 kW) @ 6500 RPM
- Top speed
- 173.0 km/h (107.5 mph)
- Compression
- 8.2:1
- Bore × stroke
- 84.8 x 70.6 mm (3.3 x 2.8 inches)
- Valves/cyl
- 2.0
- Fuel control
- Overhead Valves (OHV)
- Cooling
- Air
- Gearbox
- 5-speed
- Transmission
- Shaft drive (cardan) (final drive)
- Front tyre
- 3.00-21
- Rear tyre
- 4.00-18
- Front brakes
- Single disc
- Rear brakes
- Expanding brake
- Wet weight
- 196.0 kg (432.1 pounds)
- Fuel capacity
- 19.50 litres (5.15 US gallons)
The 1981 BMW R 80 GS
1981 BMW R 80 GS arrived as the machine that invented the big adventure bike category, and it did so almost by accident, born from BMW's off-road racing efforts rather than a marketing meeting. This is a bike built to be ridden somewhere and left there overnight. The boxer engine sits low and wide, giving it a planted, unhurried feel on gravel and pavement alike, while the shaft drive means no chain maintenance when you're three days from the nearest town. It's not fast and it's not nimble in the dirt-bike sense, but it rewards riders who value range, durability, and the ability to fix most problems with basic tools. The 1981 model carried over without significant mechanical changes from the prior year, buyers comparing it to a 1980 example should focus on mileage, service history, and condition rather than spec differences. Today's buyer tends to be a rider who already owns something modern and fast and wants a slower, more honest machine for real touring. Collector interest runs high, and clean, well-documented 1981 BMW R 80 GS examples with service records command real attention at auction.
Auction history
| Date | Listing | Price | Mileage | Source |
|---|---|---|---|---|
| Jan 25, 2026 | 616-Mile 1981 BMW R80G/S | $22,250 | — | Bring a Trailer |
| Apr 3, 2025 | 1981 BMW R80G/S | $18,250 | — | Bring a Trailer |
| Nov 23, 2024 | 1981 BMW R80G/S | $13,000 | — | Bring a Trailer |
| Sep 28, 2024 | 1981 BMW R80G/S | $10,000 | — | Bring a Trailer |
| Jun 11, 2024 | 33-Years-Owned 1981 BMW R80G/S | $10,000 | — | Bring a Trailer |
| Apr 7, 2023 | 1981 BMW R80 G/S | $42,500 | — | Bring a Trailer |
| Aug 11, 2021 | 1981 BMW R80 G/S | $24,000 | — | Bring a Trailer |
| Jun 4, 2020 | 1981 BMW R80G/S | $9,200 | — | Bring a Trailer |
| May 27, 2019 | 1981 BMW R80 G/S | $12,500 | — | Bring a Trailer |
