My bike is the final iteration of the Ariel Square Four, a Mark II 1000, from the first year of production, 1953. The monobloc cylinder barrel was replaced by individual units, resulting in four separate exhaust pipes, eliminating the overhead-camshaft engine’s weakness of overheating the rear cylinders. A redesigned head upped the power and the Square Four had no problem reaching 100 miles per hour.
The bike was fully restored at Dragonfly by the previous owner, and since then has only travelled 500 miles. I have owned the bike for 3 years and it has always started easily and run well. I am selling the bike due to commitments elsewhere, and as a result I used the bike sparingly through the summer of 2019. You will notice further refinements to the bike, not normally seen on this model, such as the engine guards, sump guard and additions to the header pipes.
Frame no. ES720
Engine no. XJ686
Genuine Ariel tools, extensive paperwork and manuals, will come with the bike.