The Riley 9 was the first four-wheeled that was made by Riley. The car was brought out in 1907.

The car had a V2 engine with 1034 cc displacement, lateral vertical valves and water cooling. The engine produced 9 bhp (6.6 kW). The chassis was 2,032 mm long, the body was 2,997 mm long and 1,524 mm wide. The chassis weighed 457 kg. A special feature of the car was detachable wire wheels, which facilitated the faster change of tires compared to other cars of the time.

The small-V2 model was offered until 1911.