BMW R 100CS (1983 – 84)

BMW R 100CS (1983 - 84)

The 1981 BMW R100CS is a testament to the marque’s commitment to simplicity, weight, and performance. This 980cc opposed Twin boasts a rich history, retaining the original concept of the BMW engine layout since 1923, while refining and honing the design and execution over the years.

With its Bing 94/40/111-112 constant depression carburetors, the R100CS delivers a distinctive engine character, providing a unique riding experience that sets it apart from its peers. The shaft-driven, ohv powertrain is a masterclass in engineering, delivering a smooth, linear power delivery that is both accessible and exhilarating.

Whether carving through twisties or cruising down the highway, the R100CS’s lightweight construction – weighing in at a mere 455 pounds with half a tank of gas – makes it an absolute delight to ride. And with a price tag of $6,600, this BMW is a true bargain for those seeking a premium motorcycle experience without the premium price tag. The BMW R100CS is a true trend-setter, a motorcycle that has been ahead of its time since its inception, and remains an iconic symbol of motorcycling excellence.

Key Specifications

Engine TypeFour stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Engine Capacity980 cc / 59.8 cu in.
Max Power51 kw / 70 hp
Max Torque76 Nm / 7.75 kgf-m / 56 ft-lb @ 6000 rpm
Fuel Tank Capacity24 L / 6.3 US gal
Weight (Wet/Kerb)484 lbs / 220 kg
Seat Height32.3 inches / 820 mm
BMW R 100CS (1983 - 84)

All Specifications

Make & Model

ModelBMW R 100CS
Year1983 – 84

Engine

Engine TypeFour stroke, two cylinder horizontally opposed Boxer, 2 valves per cylinder
Displacement980 cc / 59.8 cu in.
Bore x Stroke94 x 70.6 mm
Compression Ratio9.5:1
Max Horsepower51 kw / 70 hp
Max Torque76 Nm / 7.75 kgf-m / 56 ft-lb @ 6000 rpm
Engine Management System2x Constant depression carburetors, Bing 94/40/111 – 94/40/112
Cooling SystemAir cooled

Performance

Top Speed198 km/h / 123 mph

Transmission

ClutchDry single plate, with diaphragm spring
Gearbox5 Speed
Gear Ratios1st4.40 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50:1
Final DriveShaft

Electrical & Electronics System

StarterElectric

Chassis & Suspension

Frame TypeDouble sown tubs, dual cradle
Front SuspensionTelescopic fork with hydraulic shock absorber.
Front Suspension Travel7.8 inches / 200 mm
Rear SuspensionLong swinging arm with adjustable strut.
Rear Suspension Travel4.9 inches / 125 mm

Wheels & Brakes

Front Wheel/Rim Size2.15 – B19
Front Tire Size3.25 – H19
Rear Wheel/Rim Size2.50 – B18
Rear Tire Size4.00 – H18
Front BrakesSingle ∅260mm disc
Rear Brakes∅200 Drum

Dimension & Weights

Seat Height32.3 inches / 820 mm
Wheelbase57.67 inches / 1465 mm
Ground Clearance165 mm / 6.49 in
Fuel Tank Capacity24 L / 6.3 US gal
Wet (kerb/curb) Weight484 lbs / 220 kg

Features

  • 980cc opposed Twin engine
  • Two valves per cylinder
  • Push-rod valvetrain
  • Two constant depression carburetors
  • Bing 94/40/111 and 94/40/112 carburetors
  • Shaft-driven power delivery
  • Rear-wheel drive
  • 455 lb. curb weight
  • $6600 price
  • Belly-button fairing
  • Low bars
  • Semi-rearset pegs
  • Small fairing
  • Sporty riding position
  • Relatively low weight for its class
  • Quarter-mile time: 13.18 sec.
  • Terminal speed: 101 mph
BMW R 100CS (1983 - 84)
BMW R 100CS (1983 - 84)
BMW R 100CS (1983 - 84)

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