BMW R25

BMW R25

The 1955 BMW R25 is a stylish and Classic motorcycle with Air cooled, 247cc, Single, OHV and 13.05 HP (9.6 kW) @ 5800 rpm.

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Model year
1955
make icon
Make
BMW
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Engine Power
13.05 HP (9.6 kW) @ 5800 rpm
Speed icon
Top Speed
73.94 mph

Technical Specifications

Engine and transmission

  • Engine type:
    1 cylinders, 4-stroke, Single
  • Displacement:
    247 cc (15.09 cubic inches)
  • Bore × stroke:
    2.68 inch × 2.68 inch (square)
  • Cooling system:
    Air cooled
  • Power:
    13.05 HP (9.6 kW) @ 5800 rpm
  • Throttle:
    Cable operated
  • Valve train:
    OHV, variable
  • Valves per cylinder:
    2
  • Sparks per cylinder:
    1
  • Fuel supply system:
    Carburetor
  • Compression:
    7:1
  • Engine mounting:
    Vertical
  • Lubrication system:
    Wet sump
  • Gear box:
    Manual 4-speed
  • Clutch:
    Dry, single plate, cable operated
  • Final drive:
    Shaft
  • Spark plug pipe type:
    Bosch, W 240 T1
  • Starter:
    Kick-starter

Dimensions

  • Length:
    81.3 inch
  • Width:
    29.9 inch
  • Height:
    28 inch
  • Wheel base:
    53.7 inch
  • Ground clearance:
    3.62 inch
  • Curb weight:
    330.7 lbs

Chassis and suspension

  • Front
    Suspension:
    Cartridge
    Brake:
    Single Drum, Ø6.3 inch
    Tire:
    3.27 × 18
  • Rear
    Suspension:
    twin shock, Plunger suspension
    Brake:
    Drum, Ø6.3 inch
    Tire:
    3.27 × 18
  • Frame type:
    steel, Single cradle frame

Other

  • ABS available:
    No
  • Power-to-weight ratio:
    0.06 KW/lbs (15.62 lbs/HP)
  • Top speed:
    73.94 mph
  • Fuel capacity:
    3.17 gals
  • Number of riders:
    2 persons

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