What is the engine displacement of the 1951 Ariel MK 1 Square Four?

The 1951 Ariel MK 1 Square Four has an engine displacement of 997.0 ccm (60.84 cubic inches).

How much horsepower does the 1951 Ariel MK 1 Square Four have?

The 1951 Ariel MK 1 Square Four produces 40.0 HP (29.2 kW )) @ 5800 RPM of power.

How much does the 1951 Ariel MK 1 Square Four weigh?

The 1951 Ariel MK 1 Square Four has a dry weight of 193.0 kg (425.5 pounds).

1951 Ariel MK 1 Square Four Price, Specs, Review

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Review

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The 1951 Ariel MK 1 Square Four is a distinctive machine boasting a 997cc square four-cylinder engine. This configuration, with its unique firing order, delivers a smooth yet characterful power delivery, peaking at 40 horsepower at 5800 rpm. With a weight of 193 kg, it's a substantial motorcycle of its era, designed for comfortable touring and long-distance riding. A large 23-liter fuel tank ensures ample range between stops. Ergonomically, the MK 1 Square Four offers a relatively upright riding position, suited for riders seeking a more relaxed experience. The drum brakes reflect the technology of the time, requiring a considered approach to braking. While not built for outright speed, the focus is on providing a refined and enjoyable riding experience. The target rider for the 1951 Ariel MK 1 Square Four is someone who appreciates classic British motorcycles and the unique engineering of the square four engine. It's a bike for those who enjoy the journey as much as the destination, valuing comfort and character over outright performance. This motorcycle appeals to enthusiasts who appreciate vintage machinery and are willing to maintain a classic piece of motorcycle history.

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License Class (EU)

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The Ariel MK 1 Square Four produces 40 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 997cc class: 35-50 mpg (5.0-7.0 L/100km)

⛽ Tank: 23.00 litres (6.08 US gallons)

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Insurance Class

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