... alloy 2.Process:die-casting 3.Size: Custom Aluminum alloy Classic Motorcycle gearbox cover1.Raw material:aluminum alloy (zinc, magnesium, iron, stainless ... steel) or according to customer requirements.2.Type:motorcycle aluminum die-casting Motorcycle gearbox cover.3.Color:silver white,offwhite,black,etc ... PARTS CO., LTD sincerely to cooperate with you! Aluminum alloy Classic Motorcycle gearbox cover