BMW R100RS (1978-87)

Make Model: BMW R 100RS


Year: 1978-87
Engine: Four stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Capacity: 980 cc / 59.8 cu in
Bore x Stroke: 94 x 70.6 mm
Cooling System: Air cooled
Compression Ratio: 8.45:1
Lubrication: Wet sump
Induction: 2 x Constant depression carburettors, Bing 94/40/105 – 94/40/106
Ignition: Battery ignition
Alternator: Bosch 12V/240 W
Battery: Bosch W 7 DC / Beru 14-7 DU/ Champion N9YC
Starting: Electric
Max Power: 43.8 kW / 59.5 hp @ 6500 rpm
Max Torque: 74 Nm / 7.55 kg-m / 54.6 lb-ft @ 3500 rpm
Clutch: Dry single plate, with lever action diaphragm spring
Transmission: 5 Speed
Gear Ratio: 1st 4.4 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50
Bevel / Crown wheel: 11 / 32 teeth or 10 / 32 teeth
Final Drive: Shaft
Frame: Double sown tubs, dual cradle
Front Suspension: Telescopic fork with hydraulic shock absorber.

Front Wheel Travel: 275 mm / 6.8 in
Rear Suspension: BMW Monolever swinging arm
Rear Wheel Travel: 121 mm / 4.7 in
Front Brakes: 2 x 285mm discs, 2 piston calipers
Rear Brakes: Simplex, 200 mm drum
Front Wheel: MTH 2.50 x 18 E
Rear Wheel: MTH 2.50 x 18 E
Front Tyre: 90/90 18 51 H
Rear Tyre: 120/90 18 65 H
Dimensions: Length 2175 mm / 85.6 in Width 800 mm / 314 in Height 1447 mm / 57.0 in
Wheelbase: 1447 mm / 57.67 in
Seat Height: 820 mm / 32.3 in
Ground Clearance: 140 mm / 5.5 in
Dry Weight: 190 kg / 418 lbs
Wet Weight: 220 kg / 485 lbs
Fuel Capacity: 22 Litres / 5.8 gal
Consumption Average: 6.5L/100 km / 15.4 km/l / 36.2 US mpg
Braking 60 km/h – 0 / 100 km/h – 0: 15.1 m / 45.3 m
Standing 1/4 Mile: 13.0 sec / 160.8 km/h / 99.9 mph
Top Speed: 188.8 km/h / 117.3 mph


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