 In 1914 Henry adapted his automobile engine design for a new 500 cc straight-twin engine racing motorcycle.The Peugeot 500 M racing motorcycle was the world's first motorcycle to use a double overhead camshaft cylinder head; the twin camshafts were driven by a cascade of gears between the cylinders, and used 4 valves per cylinder.The new machine was first raced in April 1914 on the Rambouillet circuit, and in June, during the Automobile Club de France's ‘Records Day’ in Fontainebleau, it exceeded 122kmh (75 mph) over a measured kilometer and 121kmh (74 mph) over the measured mile.