BMW K75S (1987 – 89)

BMW K75S (1987 - 89)

The BMW K75S is a sport-touring icon that embodies the perfect blend of refinement, style, and performance. Its three-cylinder inline engine, powered by fuel injection, delivers a smooth and responsive ride, with a midrange punch that’s perfect for twisty roads.

While it may not be the most thrilling engine, the K75S’s powerplant is designed for comfort and practicality, making it an ideal choice for riders who crave a sporty experience without sacrificing daily usability. The bike’s running gear, including its frame, shock, and fork, is the same as the K75, but with a sportier twist courtesy of its low, narrow bars and fairing.

The result is a motorcycle that’s both capable and comfortable, with excellent brake feel and the ability to carry a passenger and luggage with ease. Whether you’re carving through mountain roads or cruising down the highway, the K75S is a joy to ride, and its unique character is sure to leave a lasting impression.

Key Specifications

Engine TypeFour-stroke, horizontal three cylinder in-line, DOHC, 2 valves per cylinder
Engine Capacity740 cc / 45 cub-in
Max Power55 kw / 75 hp
Max Torque68 Nm / 50 ft lb @ 6750 rpm
Fuel Tank Capacity5.54 US gallons / 21.0 L
Weight (Wet/Kerb)518 lbs / 235 kg
Seat Height31.9 inches / 810 mm
BMW K75S (1987 - 89)

All Specifications

Make & Model

ModelBMW K75S
Year1987 – 89

Engine

Engine TypeFour-stroke, horizontal three cylinder in-line, DOHC, 2 valves per cylinder
Displacement740 cc / 45 cub-in
Bore x Stroke67 x 70 mm
Compression Ratio11.0:1
Max Horsepower55 kw / 75 hp
Max Torque68 Nm / 50 ft lb @ 6750 rpm
Engine Management SystemElectronic injection, Bosch LE-Jetronic
Lubrication SystemWet sump

Performance

Top Speed210 km/h / 131 mph

Transmission

ClutchSingle dry plate
Gearbox5 Speed
Gear Ratios1st 4.50 / 2nd 2.96 / 3rd 2.30 / 4th 1.88 / 5th 1.67:1
Final DriveShaft

Electrical & Electronics System

StarterElectric

Chassis & Suspension

Frame TypeDouble-downtube frame with engine as a stressed member; box-section aluminum monolever swing arm
Front SuspensionTelescopic fork with hydraulic shock absorber
Front Suspension Travel7.3 inches / 185 mm
Rear SuspensionMonolever swinging arm
Rear Suspension Travel4.5 inches / 114 mm

Wheels & Brakes

Front Tire Size100/90-18
Rear Tire Size130/90-17
Front Brakes2 x 285mm discs, 2 piston calipers
Rear BrakesSingle 285mm disc

Dimension & Weights

Seat Height31.9 inches / 810 mm
Ground Clearance175 mm / 6.9 in
Fuel Tank Capacity5.54 US gallons / 21.0 L
Wet (kerb/curb) Weight518 lbs / 235 kg
Dry Weight229 kg / 505 lbs

Features

  • Three-cylinder inline engine
  • Fuel injection system
  • Single plate clutch
  • Same clunky gearbox as the R65 LS
  • Front brakes similar to the R65 LS
  • Rear disc brake
  • Engine forms a member of the frame
  • Same frame as the K75
  • Same shock and made-for-BMW fork as the K75
  • Same engine, transmission, and tires as the K75
  • Low, narrow bars
  • Fairing
  • Corbin seat
  • Unique handlebar switchgear
  • Excellent brake feel
  • Comfortable and secure passenger accommodation
  • Good throttle response
  • Tuned for smoothness and midrange power
BMW K75S (1987 - 89)
BMW K75S (1987 - 89)
BMW K75S (1987 - 89)

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