BSA M 21

⚠️ Things to consider

Weight: The BSA M 21 is relatively heavy compared to modern motorcycles, which can make handling and maneuverability more challenging, especially for less experienced riders.Performance: While it offers a classic riding experience, its performance may feel underwhelming compared to contemporary bikes, particularly in terms of acceleration and top speed.Parts Availability: As a vintage motorcycle, finding replacement parts can be difficult. This may lead to longer repair times and higher costs when maintaining the bike.Braking System: The braking system on the M 21 is not as advanced as modern standards, which can result in less effective braking performance and increased stopping distances.Comfort: The riding position and seat design may not provide the same level of comfort as modern motorcycles, particularly on longer rides, which can lead to fatigue.

⚖️ Comparison & Competition

Matchless G80 The Matchless G80 is a classic British single-cylinder motorcycle known for its robust performance and reliability. Produced in the late 1940s and throughout the 1950s, the G80 features a 500cc engine that offers a smooth ride and ample torque, making it a popular choice for both commuting and touring.Norton ES2 The Norton ES2 is a quintessential British motorcycle that gained popularity in the 1950s. With its 500cc single-cylinder engine, it delivers a blend of power and agility. The ES2 is celebrated for its classic styling, comfortable riding position, and strong performance on both city streets and open roads.AJS Model 20 The AJS Model 20 is a classic 500cc motorcycle that embodies the spirit of British motorcycling in the 1950s. Known for its vintage charm and reliable performance, the Model 20 features a simple design and a smooth-running engine, making it ideal for everyday riding and leisurely trips.Triumph Thunderbird 6T The Triumph Thunderbird 6T, introduced in the early 1950s, is a stylish and powerful motorcycle equipped with a 650cc parallel-twin engine. Known for its distinctive look and robust performance, the Thunderbird became a favorite among riders seeking a mix of comfort and speed, making it an excellent alternative to the BSA MVelocette Venom The Velocette Venom is a high-performance motorcycle that gained a reputation for its engineering excellence. With a 500cc engine that delivers impressive power and handling, the Venom is celebrated for its racing pedigree and smooth ride. Its classic design and attention to detail make it a desirable choice for vintage motorcycle enthusiasts. These alternatives each offer a unique character and charm, reflecting the rich history of British motorcycling during the 1950s

The BSA M 21 produces 15 HP, fitting A2 license limits (max 35 kW / 47 HP). For riders 18+.

Estimated average for 591cc class: 45-60 mpg (4.0-5.5 L/100km)

⛽ Tank: 11.36 litres (3.00 gallons)

Insurance grouping for BSA M 21 (591cc):

• 📋 Group 8-15 — mid-range
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Insurance Calculator (UK est.)

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Personalised premium estimate for the BSA M 21 (UK rates):

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

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Price Estimate

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Estimated price range for the BSA M 21 based on comparable motorcycles:

AVERAGE

$2,815

📊 Category-based (22 motorcycles) · Approximate (USD)

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Buy New & Used

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Find new and used BSA M 21 1956 listings:

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