In 1930, the Ariel Square Four made its debut at the Olympia Motor Show. The bike featured an unusual four-cylinder engine that essentially consisted of two vertical twins sharing a common crankcase, cast as a monobloc design. The result was an ingeniously compact and practically vibration-free engine. 1953 saw the introduction of the Mark II model, and its redesigned cylinder head helped the Ariel join the league of genuine 100 mph motorcycles.

According to the consignor’s records on file, this fantastic example was restored by the previous owner with the help of marque authority Chuck Walton. Its restoration was meticulously undertaken with countless parts refurbished, rebuilt, or replaced, and the bike was then painted in the iconic Ariel color of Claret Red and equipped with its matching Garrard Sidecar. One of the most unique and luxurious sidecar designs, the Garrard is equally well restored and offers great protection for its passenger, with a solid door and glass windows. It is even able to accommodate a second passenger with its “dickey seat.”

The Ariel has been shown at some of the most prestigious events, including the 2009 Pebble Beach Concours d’Elegance®, 2015 Quail Motorcycle Gathering, and the Griffith Park Sidecar Concours in Los Angeles, winning several trophies along the way. This is an outstanding opportunity to acquire perhaps one of the finest restored Ariel Square Fours in existence, accompanied by an equally exquisite and rare sidecar.

*Please note that this vehicle has been in long-term static storage and may require mechanical attention prior to road use.