What is the engine displacement of the 1957 AJS 20 500?

The 1957 AJS 20 500 has an engine displacement of 498.0 ccm (30.39 cubic inches).

How much horsepower does the 1957 AJS 20 500 have?

The 1957 AJS 20 500 produces 20.0 HP (14.6 kW )) @ 6800 RPM of power.

What is the top speed of the 1957 AJS 20 500?

The 1957 AJS 20 500 has a top speed of 137.0 km/h (85.1 mph).

How much does the 1957 AJS 20 500 weigh?

The 1957 AJS 20 500 has a dry weight of 178.0 kg (392.4 pounds).

1957 AJS 20 500 Price, Specs, Review

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Review

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The 1957 AJS 20 500 is a classic motorcycle featuring a 498cc engine producing 20 horsepower at 6800 RPM, enabling it to achieve a top speed of 137 km/h. This air-cooled engine delivers a charming and engaging riding experience, prioritizing usability and character over outright power. Weighing 178 kg with a 13.5-liter fuel tank, it's a manageable and practical machine for enjoyable rides. The AJS 20 500's ergonomics are tailored for comfortable, upright riding, making it accessible to a wide range of riders. The telescopic front suspension and drum brakes provide a traditional feel, encouraging a smooth and deliberate riding style. This setup emphasizes rider involvement and a connection to the road. The 1957 AJS 20 500 is perfect for riders who appreciate the simplicity and charm of vintage motorcycles. It's an excellent choice for those seeking an authentic riding experience and a tangible link to motorcycling history. Its classic styling and reliable performance make it a rewarding machine for leisurely rides and vintage gatherings.

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License Class (EU)

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The AJS 20 500 produces 20 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 498cc class: 45-60 mpg (4.0-5.5 L/100km)

⛽ Tank: 13.50 litres (3.57 US gallons)

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Insurance Class

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Insurance grouping for AJS 20 500 (498cc):

📋 Group 8-15 — mid-range

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Insurance Calculator (UK est.)

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Personalised premium estimate for the AJS 20 500 (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 AJS 20 500 1957 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.

AJS 20 500

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