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1950 BMW R 25 technical specifications

BMW R 25 technical specifications

Technical specifications

Model: R 25
Years: 1950 - 51
Engine: Four stroke, single cylinder, pushrod operated, OHV, 2 valves per cylinder.
Capacity: 247 cc / 15.1 cu in.
Bore x Stroke: 68 x 68 mm
Compression Ratio: 6.5:1
Cooling System: Air cooled
Induction: 1x Bing type 1/22/28
Ignition: Battery ignition 
Starting: Kick
Clutch: Single plate, dry
Max Power: 8.9 kW / 12 hp @ 5600 rpm
Transmission: 4 Speed 
Final Drive: Shaft
Gear Ratio: 1st 6.10 / 2nd 3.00 / 3rd 2.04 / 4th 1.54:1
Frame: Closed steel twin loop frame, welded
Front Suspension: Telescopic fork
Rear Suspension: Pushrod suspension, spring loaded saddle
Front Brake: ∅160mm Drum
Rear Brakes: ∅160mm Drum
Front Tyre: 3.25 x 19"
Rear Tyre: 3.25 x 19"
Wet-Weight: 140 Kg / 308 lbs
Fuel Capacity : 12 L / 3.1 US gal

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