CSD Racing Products designs and manufactures race-proven, quality cages for RZR’s and other UTV and race vehicles. If you would like to fabricate your own custom cage for your RZR RS1, we offer our high-quality, precision-machined cage adapter bungs to simplify the process. These adapters bolt to the chassis at the factory cage locations and provide a precision indexed joint to interface with your cage tubing These B/C-Pillar adapters are designed to join the cage to the chassis at the B- or C-Pillar joint and use the factor cage attachment bolts. Simply fit your tubing over the precision-machined bung and weld it up. With a stepped indexing ring, this adapter is designed to fit either 1-3/4″ .120-wall or .095 wall tubing.