1.Fitment:Compatible with Ford F150 2004-2020;Not compatible with 2010-2014 SVT Raptors or 2017-2018 Raptor models 2.Ball Joint：The ball joint has a larger range of motion, allowing the chassis to align perfectly. Ball joint dust cover prevents dirt from entering and extends service life 3.Function:2-4 inch front upper control arms can improve and increase the strength of the suspension and ride height, reduce the stress and angle correct the wandering and diving into corner issues, so it will reduce rubbing. 4.Easy installation:Ball joint has a hexagonal hole for easy installatio 5.Please confirm the compatible model and year of the product before purchasing （Pair）Front Upper Control Arms for 2-4" Lift Kits Compatible with Ford F150 2004-2020