BMW R 100S (1979 – 80)

BMW R 100S (1979 - 80)

The BMW R 100S is a high-performance motorcycle that embodies the essence of classic BMW engineering. Its 980cc, air-cooled, horizontally-opposed twin engine is the beating heart of this iconic bike, delivering a potent blend of power and refinement. With its constant depression carburetors, the R 100S is equipped with Bing 94/40/105 and 94/40/106 models, providing seamless fuel flow and optimal engine performance.

The R 100S is a masterclass in balanced engineering, where every component works in harmony to create a riding experience that is both exhilarating and manageable. Its responsive handling and precise steering make it a joy to navigate twisty roads and sweeping corners.

As you settle into the saddle, the R 100S wraps you in a cocoon of sophistication and refinement, its rich exhaust note and subtle nuances of engine character weaving a spell of riding nirvana that’s impossible to resist. The BMW R 100S is a true classic, a timeless masterpiece that continues to inspire and captivate riders to this day.

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 / 7.7 kgf-m / 56 ft-lb @ 6000 rpm
Fuel Tank Capacity6.3 US gallons / 24.0 L
Weight (Wet/Kerb)484 lbs / 220 kg
Seat Height32.3 inches / 820 mm
BMW R 100S (1979 - 80)

All Specifications

Make & Model

ModelBMW R 100S
Year1979 – 80

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 / 7.7 kgf-m / 56 ft-lb @ 6000 rpm
Engine Management System2 x constant depression carburettors, Bing 94/40/105 – 94/40/106
Lubrication SystemWet sump
Cooling SystemAir cooled

Performance

Top Speed190.7 km/h / 118.5 mph

Transmission

ClutchDry single plate, with diaphragm spring
Gearbox5 Speed
Gear Ratios1st 4.4 / 2nd 2.86 / 3rd 2.07 / 4th 1.67 / 5th 1.50 : 1

Electrical & Electronics System

BatteryBosch 0.6 hp (from 1978: 0.7 Kw)
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 Size1.85 B 19
Front Tire Size3.25-19
Rear Wheel/Rim Size2.15 B 18
Rear Tire Size4.00-18
Front Brakes2 x ∅260mm Discs, 2 piston calipers
Rear Brakes∅260mm Drum

Dimension & Weights

Seat Height32.3 inches / 820 mm
Wheelbase57.67 inches / 1465 mm
Ground Clearance165 mm / 6.49 in
Fuel Tank Capacity6.3 US gallons / 24.0 L
Wet (kerb/curb) Weight484 lbs / 220 kg

Features

  • 2 x constant depression carburettors
  • Bing 94/40/105
  • Bing 94/40/106
BMW R 100S (1979 - 80)
BMW R 100S (1979 - 80)

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