The Sunbeam models for sports use are made in two sizes, the 14-40 h.p. four-cylinder, which has an engine of 75 mm. and 120 mm. bore and stroke, and the 20-60 h.p. six-cylinder machine, with bore and stroke of the same as the above. The same general specification applies to both, except that the larger chassis has a four-speed gear box, and the smaller a three-speed box only. Both have overhead valve engines single plate clutch, gear box with right hand control, bevel drive, and internal expanding brakes in all four wheels. Wire wheels are standard, and the tyres on the smaller model are 815 min. by 105 mm., those on the larger being 820 by 120.