BMW K 100 RS - 1990 Specifications and Reviews

The 1990 BMW K 100 RS is a sophisticated sport-touring motorcycle ideal for riders seeking comfortable long-distance travel with spirited performance. Its liquid-cooled 987cc inline-four engine delivers smooth 100 horsepower, while the shaft drive and five-speed gearbox provide reliable, low-maintenance cruising. Best known for combining German engineering refinement with practical touring capability, it attracts experienced riders valuing comfort and dependability over raw sportiness.

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General information

CategorySport touring
Year1990
ModelBMW K 100 RS

Engine and Transmission Specifications

Transmission type,final driveShaft drive (cardan)
Gearbox5-speed
Cooling systemLiquid
Fuel controlDOHC
Valves per cylinder4
Bore x stroke67.0 x 70.0 mm (2.6 x 2.8 inches)
Compression11.0:1
Top speed225.0 km/h (139.8 mph)
Power100.00
Engine typeIn-line four, four-stroke
Capacity:987.00 ccm (60.23 cubic inches)

Brakes, suspension, Frame and wheels

Rear brakesSingle disc
Front brakesDual disc
Rear tyre dimensions160/60-18
Front tyre dimensions120/10-17
 
 

Physical measures and capacities

Fuel capacity22.00 litres (5.81 gallons)
Weight incl. oil, gas, etc277.0 kg (610.7 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay

Performance Profile & Rider Fit

100 hp
Peak Power
3.8s
0-60 mph
139.8 mph
Top Speed

Best For

Track35%
City45%
Cornering60%
Daily Riding65%
Touring90%
Passenger80%

Rider Profile

Best ForBest suited to riders with some experience, as the K100 RS is a substantial, shaft-driven machine that rewards smooth, deliberate inputs rather than aggressive riding.
PurposeBuilt for confident high-speed touring and long-distance road covering, blending sporty performance with genuine cross-country comfort.
Rider FitA tall, heavy bike with a wide fairing and a forward-leaning but not extreme sport-touring riding position, favoring taller and stronger riders.
CharacterA solid, mechanically distinctive in-line four with shaft drive that delivers smooth, linear power and a reassuring, stable feel at speed.
Not Ideal ForNot a good fit for new riders, off-road enthusiasts, or anyone wanting a light, flickable machine for tight urban maneuvering.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Reviews

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