This replacement kit works on multiple models and includes 1 ball joint, a rubber boot and a nut and cotter pin. Everything in this kit is precisely what is needed to replace one upper ball joint to one lower ball joint which depends on the model of your Side x Side. Before you get around to actually hunting for these ball joints, make sure that you get the right parts to match your UTV. We have you covered with ball joints for quite a few of the Polaris Rangers and their durability is beyond question. When you purchase this kit you will have a long life on your parts and therefore a long time before replacing your ball joints becomes a problem you have to deal with again. Buy quality from the get go. You deserve to enjoy your UTV and your machine deserves only the best. Don’t you agree?