BMW R65

BMW R65

year icon
Model year
1981
make icon
Make
BMW
power icon
Engine Power
50.03 HP (36.8 kW) @ 7250 rpm
Speed icon
Top Speed
108.74 mph

Technical Specifications

Engine and transmission

  • Engine type:
    2 cylinders, 4-stroke, Boxer
  • Displacement:
    649 cc (39.65 cubic inches)
  • Bore × stroke:
    3.23 inch × 2.42 inch (oversquare - shortstroke)
  • Cooling system:
    Air cooled
  • Power:
    50.03 HP (36.8 kW) @ 7250 rpm
  • Torque:
    52.3 Nm (38.57 lb-ft) @ 6500 rpm
  • Throttle:
    Cable operated
  • Valve train:
    OHV, variable
  • Valves per cylinder:
    2
  • Sparks per cylinder:
    1
  • Fuel supply system:
    Carburetor
  • Funnel diameter:
    1.26 inch
  • Compression:
    9.2:1
  • Engine mounting:
    Longitudinal
  • Lubrication system:
    Wet sump
  • Gear box:
    Manual 5-speed
  • Clutch:
    Dry, single plate, cable operated
  • Final drive:
    Shaft
  • Spark plug pipe type:
    Bosch, W 5 D
  • Starter:
    Electric

Dimensions

  • Length:
    83.1 inch
  • Width:
    27.1 inch
  • Height:
    42.9 inch
  • Wheel base:
    55.1 inch
  • Ground clearance:
    5.12 inch
  • Seat height:
    31.9 inch
  • Curb weight:
    451.9 lbs

Chassis and suspension

  • Front
    Suspension:
    Cartridge
    Suspension travel:
    6.89 inch
    Brake:
    Single Disk, Ø10.24 inch
    Tire:
    83 / R18 S
  • Rear
    Suspension:
    twin shock, Swingarm
    Suspension travel:
    4.33 inch
    Brake:
    Drum, Ø7.87 inch
    Tire:
    102 / R18 S
  • Frame type:
    steel, Double cradle frame

Other

  • ABS available:
    No
  • Power-to-weight ratio:
    0.18 KW/lbs (5.57 lbs/HP)
  • Acceleration (0-60 mph):
    5.8 sec
  • Top speed:
    108.74 mph
  • Fuel capacity:
    5.81 gals
  • Number of riders:
    2 persons

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