Sinbo Precision Mechanical Co.,Ltd is one of the best auto and motorcycle piston engine/auto pistons manufacturers and suppliers in China, equipped with a professional auto and motorcycle piston engine/auto pistons factory, welcome to wholesale our products online.Product Details1.Material: stainless steel, aluminum alloy2.Dia. from 90mm---139mm3.EngineType: EK100,WO6D, HO7C-LA, H07C-MA, JO8CT. ...