BMW R 100RT (1984)

BMW R 100RT (1984)

The BMW R 100RT, a tourer born from the loyalty of BMW’s faithful followers. In 1987, BMW resurrected the 1000cc Boxer, now available in RT, RS, and GS guises. This new RT boasts improved performance, retaining the quirks that define the BMW Twins. At its heart lies a 980cc, 60 horsepower engine, emphasizing a broad, smooth powerband. The low-end power has been increased, with a higher compression ratio, smaller carburetors, and a tuned exhaust system. The result is a strong, torque-rich engine, pulling hard from idle and feeling particularly strong between 3000 and 5000 rpm. It’s a perfect blend of power and cruising ability, suitable for any speed up to 90 mph, and will effortlessly push the barn-door fairing through the air at 105 mph.

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 @ 7000 rpm
Max Torque76 Nm / 7.7 kgf-m / 56 ft-lb @ 6000 rpm
Fuel Tank Capacity6.3 US gallons / 24.0 L
Weight (Wet/Kerb)525 lbs / 238 kg
Seat Height32.3 inches / 820 mm
BMW R 100RT (1984)

All Specifications

Make & Model

ModelBMW R 100RT
Year1984

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 @ 7000 rpm
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 Speed203 km/h /126 mph

Transmission

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

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 H-19
Rear Wheel/Rim Size2.75 C 18
Rear Tire Size4.00 H-18
Front Brakes2 x ∅260mm discs, 2 piston calipers
Rear BrakesSimplex ∅200 mm 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) Weight525 lbs / 238 kg

Features

  • 980cc Boxer engine
  • 2 x Constant depression carburettors
  • Bing 94/40/105 – 94/40/106 carburetors
  • Increased low-end power
  • Broad, smooth powerband
  • 60 peak horsepower
  • 500-pound tourer
  • Ability to push barn-door fairing through air at 105 mph
  • Reduced vibration
  • Improved driveline response
  • 38.5mm-diameter fork tubes
  • 25mm front axle
  • Rugged fork brace
  • Monolever design single-sided swing-arm
  • Soft and lightly damped suspension
  • Single-sided swing-arm chassis
BMW R 100RT (1984)
BMW R 100RT (1984)
BMW R 100RT (1984)

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