PartsW 9 Pc Suspension Kit for Escalade Avalanche Silverado Suburban Tahoe Sierra Yukon Inner & Outer Tie Rod Ends Pitman Arm W/4 Grooves Upper & Lower Ball Joints Pitman Arm comes with 4 grooves 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