Standard Aston Martin parts were used on a specially built narrow chassis with quarter elliptic springs at the rear. Chassis number 1915, registration number XO 9958. The engine had previously been developed for the 1922 French Grand Prix by Aston Martin. It was based on half a 1921 three-litre eight-cylinder Ballot engine giving a four-cylinder configuration, with twin overhead camshafts, 16 valves, and 1. 5 litres capacity. It produced 55 bhp (41 kW) at 4,200 rpm.
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