Motorcycle drive chains; drive chains for two-wheeled motor vehicles; drive chains for land vehicles; gearings for motorcycle; gearings for two-wheeled motor vehicles; gearings for land vehicles; transmission chains for motorcycle; transmission chains for two-wheeled motor vehicles; transmission chains for land vehicles; roller chains, machine elements for land vehicles, except for bicycles; power transmissions and gearing, machine elements for land vehicles; drive-chain guards for two-wheeled motor vehicles; parts and fittings of two-wheeled motor vehicles; roller chains for motorcycles; roller chains for two-wheeled motor vehicles; roller chains for land vehicles.