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 E39 5 Series - 6.8 cylinder engine M5 petrol and diesel 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 calipers from "collapsing" All struts are made of structural steel, which ensures adequate strength and stiffness. zinc, which prevents corrosion Dedicated to: BMW E39 5 Series - engine 6.8 cylinders M5 petrol and diesel Main advantages and reasons for using struts: stiffening the car body better cornering recommended for sports suspension improves driving comfort prevents breaking the windshield recommended in every older in the car, they prevent the cups from "collapsing"