By the mid 1930s Ariel singles were respected competition machines with the factory offering competition versions of the Red Hunter through their catalog. All 500cc Red Hunters had polished steel flywheels and a cylinder head with polished combustion chamber and ports. Ariel claimed 27hp at 6000rpm for the VH. The competition Hunters had a crankcase undershield, competition tires, nail catchers, high clearance fenders, detachable rear wheel, chain guard rather than enclosed primary and fabric rather than cork clutch. The lights, horn and mag dyno were replaced by a BTH magneto, while the smaller gas and oil tanks of the 350 NH were fit to the 500 VH. A limited number (<10 reportedly) aluminum-bronze cylinder heads was also made available to those racing 500cc engines. Selling with reserve. This fine and very rare example of the aluminum- bronze head 500cc model has undergone a professional restoration. It is reported to be a very good and powerful runner.