1991 BMW R 100 GS

Specifications
- Category
- Touring
- Displacement
- 979.0 ccm (59.74 cubic inches)
- Displacement (cc)
- 979.00
- Engine details
- Two cylinder boxer, four-stroke
- Power
- 60.0 HP (43.8 kW) @ 6500 RPM
- Top speed
- 164.0 km/h (101.9 mph)
- Compression
- 8.5:1
- Bore × stroke
- 94.0 x 70.6 mm (3.7 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
- 90/90-21
- Rear tyre
- 130/80-17
- Front brakes
- Single disc
- Rear brakes
- Expanding brake
- Wet weight
- 225.0 kg (496.0 pounds)
- Fuel capacity
- 26.00 litres (6.87 US gallons)
The 1991 BMW R 100 GS
The 1991 BMW R 100 GS sits in the middle of BMW's adventure-touring range, the machine that essentially proved a road-biased boxer could handle dirt roads and still cross continents in comfort. This is a bike built around the airhead twin's low-end pull and mechanical simplicity, which matters more than any horsepower figure once you're two days from the nearest dealer. The tall suspension travel and upright ergonomics reward riders who want to point the front wheel at gravel tracks, forest service roads, or an unpaved border crossing without worrying about fragility. It's heavy by modern standards and not quick, but it's stable at speed and forgiving when the surface turns loose. The 1991 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1990 example should focus on mileage, service history, and condition rather than spec differences. Owners tend to be experienced riders drawn to long-distance touring and light off-road travel, often people who've owned newer GS models and want something simpler to maintain. Collector interest in the 1991 BMW R 100 GS remains moderate, mostly from riders who actually use these bikes rather than park them.
Auction history
| Date | Listing | Price | Mileage | Source |
|---|---|---|---|---|
| Feb 12, 2026 | 1991 BMW R100GS | $6,100 | — | Bring a Trailer |
| Jul 30, 2025 | 1991 BMW R100GS | $12,418 | — | Bring a Trailer |
| Sep 20, 2024 | 1991 BMW R100GS | $6,100 | — | Bring a Trailer |
| Sep 9, 2024 | 1991 BMW R100GS | $4,750 | — | Bring a Trailer |
| Jan 8, 2024 | Modified 1991 BMW R100GS | $4,600 | — | Bring a Trailer |
| Nov 17, 2022 | 28-Years-Owned 1991 BMW R100GS | $7,000 | — | Bring a Trailer |
| Oct 14, 2022 | 1991 BMW R100GS | $6,399 | — | Bring a Trailer |
| Dec 28, 2021 | 1991 BMW R100GS | $5,100 | — | Bring a Trailer |
| Dec 20, 2021 | 1991 BMW R100GS | $6,250 | — | Bring a Trailer |
All BMW R 100 GS years
BMW gear

BMW BMW Logo Cap
$22Shop Now
BMW BMW Logo Cap
$20Shop Now
BMW Puma BMW M Motorsports Tee
$35Shop Now
BMW BMW Freude M Cap
$40Shop Now
BMW Puma BMW M Motorsports Pants
$60Shop Now
As an Amazon Associate we earn from qualifying purchases. Prices and availability are accurate as of the date shown and are subject to change.
