All struts are made of structural steel, which ensures adequate strength and stiffness. Each strut is powder coated in black mat, under the paint there is a zinc primer to prevent corrosion Dedicated to: BMW E30 rear Main advantages and reasons for using struts: stiffening the body better cornering recommended for sports suspension improves driving comfort prevents cracking at the front windows recommended in every older car prevent the sockets from "collapsing" All struts are made of structural steel, which ensures adequate strength and stiffness. Each strut is powder coated in black mat, under the paint there is a zinc primer to prevent corrosion. Dedicated to: BMW E30 rear Main advantages and reasons for using struts: stiffening the body better handling of the car in corners recommended for sports suspension improves driving comfort prevents cracking of the windshield recommended in every older car prevents the sockets from "collapsing"