When you push your RS1 to the limits sometimes the stock frame can't keep up. The RMG Chassis Gusset Kit for the Polaris RZR RS1 was designed to add strength to all the areas on the RS1 chassis that are prone to cracking and it includes weld washers to strengthen all the suspension mounting points. All the brackets and weld washers are laser cut from 4130 Chromoly plate. We recommend this kit to anyone who is planning on racing and to anyone who wants to push their RS1 to the limits.