What is the engine displacement of the 1955 Ariel MK 2 Square Four?

The 1955 Ariel MK 2 Square Four has an engine displacement of 997.0 ccm (60.84 cubic inches).

1955 Ariel MK 2 Square Four Price, Specs, Review

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Review

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The 1955 Ariel MK 2 Square Four is a notable example of British motorcycle engineering from the mid-20th century. Powered by a 997cc square four engine, this motorcycle offered a distinctive riding experience characterized by its smooth power delivery. The square four design, with its paired cylinders, was a unique feature that set it apart from more conventional engines of the time. The MK 2's ergonomics were designed for comfortable touring, with a relatively upright riding position. The large 6.08 US gallon fuel tank ensured ample range for long journeys, a practical feature for riders of the era. Equipped with drum brakes, stopping required anticipation and a measured approach, typical of motorcycles from this period. This motorcycle appeals to enthusiasts who appreciate classic British motorcycles and the distinctive engineering of the square four engine. It represents a piece of motorcycling history and offers a glimpse into the riding experience of the 1950s.

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License Class (EU)

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Rule of thumb: under 125cc / 15HP → A1, under 47HP → A2, above → A.

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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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