Hks Adjustable Cam Gears - Duralumin - rb 20 / 25 / 26 dett .

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NEW version HKS cam pully made from Duralumin + Ni Plating Duralumin is alloy of aluminum (over 90%) with copper (about 4%), magnesium (0.5%-1%), and manganese (less than l%). Before a final heat treatment the alloy is ductile and malleable; after heat treatment a reaction between the aluminum and magnesium produces increased hardness and tensile strength. Because of its lightness and other desirable physical properties, duralumin is widely used in the aircraft industry. material of both pulley