BMW R51 From 1939 Very Rare Bike
Dealer website
AI
Bmw
R 51
Classic · 494 cc
For sale now1 motorcycles
- Engine
- 494 cc
- Power
- 29 hp
- Weight
- 181 kg
- Price range
- €23,500 – €23,500
This text was partly made with AI and may contain errors.
What should you pay for a R 51?
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Price trend
Based on price data from 4 of the past 12 months.
Used prices have held steady since July 2026.
Model family
R 51 at a glance
Quick reference values. Model year, generation and trim can differ.
Displacement
494 cc
Power
29 hp · 21 kW
Torque
40 Nm
Category
Classic
Specifications
- Displacement
- 494 cc
- Power
- 29 hp · 21 kW
- Torque
- 40 Nm
- Weight
- 181 kg
- Seat height
- 780 mm
- Fuel capacity
- 17 l
- Top speed
- 140 km/h
- Production
- 1938 – 1955
- Category
- Classic
Search results
1 results for Bmw R 51
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Comparable models
Also worth considering
Models in the same category and price range to consider alongside the R 51.
Generations and editions
Features and handling differ by generation. Use this overview to find the right version.
1 variants
Years
1938 - 1941
R51 (1938–1941)
GenerationPre-war version with plunger suspension and first 500cc sporting boxer layout.
494 cc24 hp2 cyl.A2 suitable
About this model
About the Bmw R 51
The BMW R51 name covers the pre-war R51 and post-war R51/2 and R51/3. All use a roughly 494 cc overhead-valve boxer and shaft drive, but frame, suspension and engine development differ. A 1953 example is normally an R51/3 with telescopic fork and revised chassis.
Correct suffix and serial numbers are essential for parts and value. Verify restoration records, crankshaft, oil delivery, gearbox and shaft drive. Mixed-generation builds exist and must be disclosed.
- Category
- Classic
- Production
- 1938 – 1955
- Power
- 29 hp
- Weight
- 181 kg
Before you buy
What to check before buying
- Identify R51, /2 or /3 from serial numbers.
- Check crankshaft, oil delivery and cylinder heads.
- Inspect frame, front and rear suspension for repairs.
- Check gearbox, shaft drive and original Bosch electrics.
Frequently asked questions
Frequently asked questions about the Bmw R 51
What does a used Bmw R 51 cost?
A used Bmw R 51 costs €23,500 on average. Most cost €23,500 to €23,500. This is based on 1 motorcycles for sale now.
How many used Bmw R 51 are for sale?
MotorMonitor now compares 1 used Bmw R 51 motorcycles from Dutch sales sites.