Motorcycle Piston GN5 1).OEM service 2).ISO9001 ,Ts16949 3).Dia:50MM 4).Material:aluminium 5.for the HONDA As the same Dia.for the HONDA,we have these pistons: H100S MB100 CH100 AT100 NF100 WIN100 C100 HW100 DREAM JD100 QJ100 CUB100 CD100 GY100 KCW100. At present we are mainly manufacturing various internal-combustion engine pistons including automobile pistons, sports vehicle pistons, engineering vehicle pistons, tank pistons, ship-purpose pistons, vessel pistons, yacht pistons and locomotive(train) pistons. There are 950 models available covering 3800 specifications. They are an OEM for many enginesmanufacturers and the Chinese Military Enterprises and also exported in a large quantity. We are the first supplier of the Chinese Military Enterprises at home.