What is the engine displacement of the 1940 BMW R 51?

The 1940 BMW R 51 has an engine displacement of 494.0 ccm (30.14 cubic inches).

How much horsepower does the 1940 BMW R 51 have?

The 1940 BMW R 51 produces 24.1 HP (17.6 kW )) @ 5600 RPM of power.

What is the top speed of the 1940 BMW R 51?

The 1940 BMW R 51 has a top speed of 140.0 km/h (87.0 mph).

1940 BMW R 51 Price, Specs, Review

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Review

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The 1940 BMW R 51 represents pre-war motorcycle engineering with a focus on performance and reliability. Its 494cc engine delivers 24.1 horsepower at 5600 RPM, pushing it to a top speed of 140 km/h. The 4-speed gearbox allows for efficient power delivery, while the 14-liter fuel tank provides a reasonable range for the era. Ergonomically, the R 51 would have offered a blend of comfort and control. The cartridge front suspension aimed to improve ride quality, while the expanding drum brake provided adequate stopping power. The riding position would have been relatively upright, suitable for various riding conditions. This motorcycle was targeted at riders who valued performance and reliability. It would appeal to enthusiasts interested in pre-war motorcycles and the history of BMW. The R 51 represents a time when motorcycles were evolving into more sophisticated machines, capable of both commuting and touring.

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License Class (EU)

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The BMW R 51 produces 24 HP, fitting A2 license limits (max 35 kW / 47 HP). For riders 18+.

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Fuel Economy & Running Costs

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Estimated average for 494cc class: 45-60 mpg (4.0-5.5 L/100km)

⛽ Tank: 14.00 litres (3.70 US gallons)

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Insurance Class

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Insurance grouping for BMW R 51 (494cc):

📋 Group 8-15 — mid-range

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Insurance Calculator (UK est.)

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Personalised premium estimate for the BMW R 51 (UK rates):

💡 Estimate based on UK market averages. For real quotes, compare on Compare the Market, MoneySuperMarket, GoCompare.

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Buy New & Used

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Find new and used BMW R 51 1940 listings:

🛒 eBay Motors 🏍️ Cycle Trader 🇬🇧 Auto Trader UK 🔍 Google Listings

💡 Third-party listings. MotoBike Info is informational only.

👤 Final premium varies by rider age, history, location.

BMW R 51

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