BMW R67/3 with sidecar (1955-56)

The BMW R 67/3 is a motorcycle model that was produced between 1955 to 1956. It features a four-stroke, two-cylinder horizontally opposed Boxer engine, with a capacity of 594 cc and a compression ratio of 6.2:1. The bike is air-cooled and has a magneto ignition, with starting being done through a kick start. The clutch is a single-plate, dry design, with power being delivered through a 4-speed transmission and a shaft final drive system. The frame is a double loop steel tubular design, with telescopic front suspension and a rear suspension that utilizes a spring and coil compression springs.

The BMW R 67/3 comes equipped with 200mm drum duplex full hub brakes in the front, and 200mm drum simplex full hub brakes at the rear. It has a wet weight of 192 kg or 422 lb, and a fuel tank capacity of 17 liters or 4.4 US gallons. The bike has a front and rear tire size of 3.50-19″, with the rear tire size being increased to 4.00 x 18″ when equipped with a sidecar. With a sidecar attached, the bike’s weight increases to 320 kg or 704 lbs. Overall, the BMW R 67/3 is a classic motorcycle that is notable for its unique horizontally opposed engine design and sleek, vintage styling.

Technical specifications:

Make Model: BMW R 67/3

Year: 1955-56

Engine: Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Capacity: 594 cc / 36.2 cu in
Bore x Stroke: 72 x 73 mm
Compression Ratio: 6.2:1
Cooling System: Air cooled
Induction: 2 x Bing 1/24/25 – 1/24/26 carburetors
Ignition: Magneto ignition
Starting: Kick
Clutch: Single plate, dry
Max Power: 20.9 kW / 28 hp @ 5600 rpm
Transmission: 4 Speed
Final Drive: Shaft
Gear Ratio: 1st 4.0 / 2nd 2.28 / 3rd 1.7 / 4th 1.3
Frame: Double loop steel tubular frame
Front Suspension: Telescopic front fork with hydraulic damping; plunger type

Rear Suspension: Spring with coil compression springs and rubber deflection stops
Front Brakes: 200mm Drum duplex full hub
Rear Brakes: 200mm Drum simplex full hub
Front Tyre: 3.50 -19″
Rear Tyre: 3.50 -19″ (sidecar, rear 4.00 x 18″)
Wet-Weight: 192 kg / 422 lb (with sidecar, 320 kg / 704 lbs)
Fuel Capacity: 17 liters / 4.4 US gal

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