1986 BMW K100RS

1986 BMW K100RS

Introduced in 1986, the 1986 BMW K100RS features a 987cc DOHC inline-4 engine producing 90hp, establishing itself as a notable sport bike.

Specifications

Engine

Type
DOHC inline-4
Displacement
987 cc
Cylinders
4
Power
90 hp @ 8000 rpm
Torque
86.0 Nm
Compression
Bore × Stroke
67.0 × 70.0 mm
Cooling
Water-cooled
Fuel System
Bosch LE-Jetronic fuel injection

Chassis & Transmission

Frame
Steel tube space frame
Front Suspension
Telescopic fork
Rear Suspension
Monolever swingarm
Front Brake
Dual disc
Rear Brake
Single disc
Front Tyre
Rear Tyre
Transmission
5-speed
Final Drive
Shaft

Performance

Top Speed
220 km/h (137 mph)
¼ Mile

Dimensions & Weight

Dry Weight
245 kg (540 lbs)
Wet Weight
262 kg (578 lbs)
Seat Height
810 mm
Wheelbase
1516 mm
Ground Clearance
Fuel Capacity
22.0 L

History & Story

The 1986 1986 BMW K100RS was introduced by BMW as a sport bike aimed at riders seeking sport bike performance and style. Manufactured in Germany, it represented BMW's vision for the four-cylinder sport bike market during the 1980s.

The 1986 BMW K100RS is motivated by a 987cc DOHC inline-4 four-cylinder unit delivering 90hp at 8000 rpm. Breathing through Bosch LE-Jetronic fuel injection and kept cool by water-cooled, the engine drives through a 5-speed transmission with shaft final drive.

Built around a steel tube space frame frame, the 1986 BMW K100RS suspends its 245 kg (540 lbs) on telescopic fork forks and monolever swingarm rear units. Braking relies on dual disc at the front and single disc at the rear, with a 1516 mm wheelbase providing stability.

Performance-wise, the 1986 BMW K100RS achieves a claimed top speed of 220 km/h (137 mph). With a generous fuel capacity of 22.0 liters, it offers reasonable range for sport bike duties. The seat height of 810 mm makes it comfortable for most riders.

Known Issues

  • Final drive spline wear on shaft-drive models
  • Fuel injection (K-series) relay board failures
  • Starter motor brushes wear over time

Fun Facts

  • The 1986 BMW K100RS was produced in BMW's Germany facilities
  • The 1986 BMW K100RS featured a steel tube space frame frame typical of 1980s design philosophy

Collector Information

Parts Availability
Good
Collector Rating
5/10

Resources & Parts