Go Rhino 4000 Series Step Nerf Bars with Mounting Brackets Kit Black Powder Coat Model 4431BGo Rhino 4000 Series Side Steps with Mounting Brackets Kit Black Powder Coat Model 4431B The 4000 Series Side Steps are a pair of classic 3" round tube steps with a 90 bend at each end. High traction composite step pads makes entering and exiting a truck or SUV safe and easy. Installation is simple with no cutting or drilling required on most vehicles. Vehicle specific mounting brackets are included. 4000 Series StepGuards are available as Center