Highlights

• The Ariel Square Four was a British built motorcycle between 1931 and 1959
• The MKII Ariel had a redesigned frame to provide clearance for the high mounted SU carburetor
• This marvel of ingenuity produced 40 hp and was capable of 100 mph top speeds
• This example has been painstakingly restored by the experts at Retrospeed in Belgium, WI
• The 997cc 4 stroke engine has a very unique design using two mated transverse crankshafts
• The Plunger style rear suspension was used from 1939 until the end of its production in 1959
• This actual 1959 Ariel Square Four is believed to be one of the last imported into the United States
• Motorcycle Classics magazine ran a front cover feature on this bike