PartsW 4 Pc Front Suspension Kit for Dodge Ram 2500 & Ford Bronco F-150 / F-250 / F-350 / Upper and Lower Ball Joints Undergo impact, wear, and fatigue testing to help ensure quality and durability Advanced corrosion protection against the harshest conditions / Precision-made performance and additional strength Designed with PREMIUM quality materials for exceptional performance, reliability and peace of mind Dust boot is re-installed and permanently attached to reduce contamination, and increase durability and service life Premium alloy steel stud for strength and durability / Replacement improves handling