Run Moto Run
ApriliaBenelliBimotaBMWBSADucatiFB MondialHusqvarnaKTMMoto GuzziMV AgustaNortonTriumph
BMW · 1950

1950 BMW R51 2

Share
1950 BMW R51 2
Auction record
Average sale
$45,000
Sales
1
Low
$45,000
High
$45,000

Specifications

Category
Allround
Displacement
494.0 ccm (30.14 cubic inches)
Displacement (cc)
494.00
Engine details
Two cylinder boxer, four-stroke
Power
24.1 HP (17.6 kW) @ 5600 RPM
Top speed
135.0 km/h (83.9 mph)
Compression
6.4:1
Bore × stroke
68.0 x 68.0 mm (2.7 x 2.7 inches)
Fuel system
Carburettor. Bing 22mm
Fuel control
Overhead Valves (OHV)
Ignition
Battery
Lubrication
Wet sump
Cooling
Air
Gearbox
4-speed
Transmission
Shaft drive (cardan) (final drive)
Clutch
Dry-single plate-cable operated
Frame
Steel single cradle
Front suspension
Cartridge
Rear suspension
Twin shock-Swingarm
Front tyre
3.50-19.00
Rear tyre
3.50-19.00
Front brakes
Expanding brake (drum brake). Half hub
Front brake Ø
200 mm (7.9 inches)
Rear brakes
Expanding brake (drum brake). Half hub
Rear brake Ø
200 mm (7.9 inches)
Wet weight
185.0 kg (407.9 pounds)
Height
720 mm (28.3 inches)
Length
2130 mm (83.9 inches)
Width
815 mm (32.1 inches)
Wheelbase
1400 mm (55.1 inches)
Fuel capacity
14.00 litres (3.70 US gallons)
Starter
Kick

The 1950 BMW R51 2

1950 BMW R51 2 sits in the postwar sweet spot of BMW's revived twin-cylinder lineup, a boxer built to prove the factory was back in business after years of disruption. This is a machine meant for steady, unhurried touring rather than sport riding: the shaft drive keeps maintenance simple and clean, the boxer twin runs smooth at cruising speeds, and the whole package feels solid rather than sporty under you. Riders who've spent time on it describe a bike that rewards patience and mechanical sympathy over aggressive throttle work, with the kind of low-slung stability that makes long days on the road manageable rather than tiring. The 1950 model carried over without significant mechanical changes from the prior year — buyers comparing it to a 1949 example should focus on mileage, service history, and condition rather than spec differences. Today's buyer tends to be a collector or vintage BMW devotee rather than a daily rider, often someone stepping up from smaller prewar singles into serious postwar boxer ownership. Given moderate to high collector interest, well-documented examples of the 1950 BMW R51 2 with intact mechanicals and original finishes command real attention at auction.

Auction history

DateListingPriceMileageSource
Oct 9, 20221950 BMW BMW R51/2$45,000—Bring a Trailer

BMW gear

Shop all BMW gear

As an Amazon Associate we earn from qualifying purchases. Prices and availability are accurate as of the date shown and are subject to change.

More BMW models, 1950–1951

1950 BMW R25
1950 · BMW
R25
No auction data yet
1951 BMW R67
1951 · BMW
R67
No auction data yet