The BMW R 63, a groundbreaking motorcycle that set the tone for the German marque’s future innovations, emerged in 1928. This pioneering bike was essentially an enlarged version of the 500cc R57, boasting an exhilarating oversquare 750cc engine with a 83 x 68mm bore and stroke configuration.
With its compact, enclosed valve gear and robust construction, the R 63 delivered exceptional performance, its engine characteristics defining the riding experience. A three-speed gearbox and sturdy cycle parts, reminiscent of the 1923 R32, provided a solid foundation for the bike’s handling.
This early powerhouse of a motorcycle, with its substantial front brake and innovative heel-operated rear brake, marked a significant step forward in motorcycle design and engineering, setting the stage for the evolution of BMW’s iconic boxer twins. The BMW R 63 remains an influential and coveted classic, its rich history and performance legacy still celebrated by motorcycle enthusiasts today, and its enduring impact on motorcycle history is undeniable.
Key Specifications
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Engine Capacity
745 cc / 45.5 cu in.
Max Power
17.9 kw / 24 hp
Fuel Tank Capacity
12.5 liters /3.3 US gal
*n/a – information not provided by manufacturer
All Specifications
Make & Model
Model
BMW R 63
Year
1928 – 2029
Engine
Engine Type
Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder.
Displacement
745 cc / 45.5 cu in.
Bore x Stroke
83 x 68 mm
Compression Ratio
6.2:1
Max Horsepower
17.9 kw / 24 hp
Engine Management System
1 xSpezial 2 valve ∅24 mm carburetor
Cooling System
Air cooled
Performance
Top Speed
n/a
*n/a – information not provided by manufacturer
Transmission
Clutch
Single plate, dry
Gear Ratios
1st 2.83 / 2nd 1.55 / 3rd 1.08:1
Electrical & Electronics System
Starter
Kick
Chassis & Suspension
Frame Type
Twin loop steel tubular frame
Front Suspension
Plate spring, 6 laminae
Rear Suspension
Rigid, spring loaded saddle
Wheels & Brakes
Front Tire Size
26 x 3.5″ or 19 x 3.0″ or 27 x 2.75″ or 21 x 2.5″
Rear Tire Size
26 x 3.5″ or 19 x 3.0″ or 27 x 2.75″ or 21 x 2.5″
Front Brakes
∅200mm Drum
Rear Brakes
External shoe brake at the gearing on Cardan shaft
Dimension & Weights
Fuel Tank Capacity
12.5 liters /3.3 US gal
Features
Oversquare 750cc engine
83 x 68mm engine dimensions
Enclosed valve gear
Three-speed gearbox
Cycle parts similar to R32 model
Stronger construction
Larger front brake
Heel-operated rear brake
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*We strive to provide the most comprehensive and accurate specifications possible. However, certain details may not be available if the manufacturer did not disclose them or if the information is no longer publicly accessible. If you find any discrepancy with any data on this site, please feel free to let us know at contact@throttlecraze.com
