BMW R 100 GS

BMW  R 100 GS Date 1987 - 1996

Number sold 34.007

Price 12.990,- DM

Engine

Type four-stroke, two-cylinder, horizontally-opposed "Boxer" engine, air-cooled
Bore/stroke 94 x 70,6 mm
Cubic capacity 980 cm3
Max power 60 PS (44kW) at 6500 rpm
Max torque 76 Nm at 3750 rpm
Compression ratio 8,5 : 1
Valves per cylinder 2
Valve control ohv, using push rod and rocker arm
Carburation system 2 constant depression carburettors Bing 94/40/123 - 94/40/124
Engine lubrication wet sump

Power transmission

Clutch dry single plate, with lever-action diaphragm spring
Number of gears 5
Gear selection dog-type gearbox (ratchet foot lever)
Gear ratios 4,4 / 2,86 / 2,07 / 1,67 / 1,50 :1
Rear wheel ratio 1 : 3,09
Bevel/crown wheel 11 : 34 teeth

Electrical system

Alternator Bosch 280 W
Ignition Contact-free electronic ignition (Bosch)
Starter Bosch 0,7 kW
Spark plugs W 7 DC / Beru 14 - 7 DU / Champion N 9 YC

Suspension

Type of frame double-loop tubular frame with bolt-on rear section
Front suspension telescopic fork with hydraulic shock absorber
Rear suspension BMW Paralever - swinging arm
Spring travel 225 / 180 mm
Rims front 1,85 - 21 MTH 2
Rims rear 2,50 - 17 MTH 2
Tyres front 90/90 21 S
Tyres rear 130/80 17 S
Brakes front single disc brake 285 mm
Brakes rear Simplex drum brake 200 mm

Dimensions and weights

Length x width x height 2290 x 1000 x 1165 mm [Paris-Dakar: height 1365 mm]
Wheel base 1514 mm
Ground clearance 200 mm
Tank capacity 24 l [Paris-Dakar: 35 l]
Unladen weight, full tank 210 kg [Paris-Dakar: 236 kg]
Max permissible weight 420 kg
Fuel consumption 4,9 l / 100 km (at constant 90 km/h)
Acceleration 0 - 100 km/h 4,8 s
Top speed 181 km/h [Paris-Dakar: 180 km/h]

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