Fleece Performance LML Tie Rod Sleeves are a must for any 2011 GM 2500 3500HD pickup that utilizes four wheel drive. These support sleeves keep the weak factory tie rods from bending under the added stress of lifted torsion bars, increased horsepower and torque, and aggressive tires. NOTE The tie rod sleeves are only intended for use with factory GM tie rods and may not work with all aftermarket replacement tie rods.