| MODEL | BMW R 100GS 1987 |
| Year | 1987 |
| Engine Type | Four stroke, two-cylinder horizontally-opposed Boxer, pushrod, 2 valves per cylinder |
| Displacement / Capacity | 980 cc / 59.8 cu in |
| Bore X Stroke | 94 x 70.6 mm |
| Compression Ratio | 8.5:1 |
| Cooling System | Air-cooled |
| Max Power | 44 kW / 60 hp @ 6500 rpm |
| Max Torque | 76 Nm / 7.75 kgf-m / 56 ft-lb @ 3750 rpm |
| Ignition | Electronic, Bosch |
| Induction | 2 x Bing carburettors |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 Speed |
| Clutch | Dry single plate, diaphragm spring |
| Final Drive | Shaft |
| CHASSIS SPECS | |
| Frame | Double-loop tubular steel frame with bolt-on rear section |
| Front Suspension | Telescopic fork, 225 mm / 8.8 in travel |
| Rear Suspension | BMW Paralever single-sided swingarm, single shock with adjustable preload and rebound damping, 180 mm / 7.0 in travel |
| Front Brakes | Single 285 mm disc, 2-piston caliper |
| Rear Brakes | 200 mm drum |
| DIMENSION SPECS | |
| Overall Length | 2290 mm / 90.1 in |
| Overall Width | 1000 mm / 39.3 in |
| Overall Height | 1165 mm / 45.8 in |
| Seat Height | 850 mm / 33.5 in |
| Wheelbase | 1514 mm / 59.6 in |
| Ground Clearance | 200 mm / 7.9 in |
| Dry Weight | — |
| Wet Weight | 210 kg / 462 lbs |
| WHEEL SPECS | |
| Front Tyre | 90/90-21 |
| Rear Tyre | 130/80-17 |
| FUEL SYSTEM | |
| Fuel Capacity | 24 Litres / 6.3 US gal |
| Fuel Consumption | — |
| Top Speed | 181 km/h / 112 mph |
Launched in 1987 with the R 80 GS, the R 100 GS was the bigger, more road-biased GS: a 980 cc two-valve boxer with 60 hp, the new Paralever single-sided swingarm that tamed shaft-drive reactions, a long-travel fork and cross-spoke wheels that took tubeless tyres. Very capable on tarmac and on long overland trips but heavy in mud, it became one of the best-selling big trail bikes of its era.
