SuperATV’s nerf bars are built to last with 1.75” diameter heavy duty steel tubing?tough enough to handle the weight your RZR 4 1000 can throw around. To top it off, we covered these tree kickers in a durable, UV resistant powder coating to keep them looking good for years. We didn’t skimp out on any details and designed this kit to fit your 4 seater securely and easily so you can slap it on your machine and go with as little down time as possible.