Assault Industries MAS-223 Phoenix Axle for Polaris RZR RS1 by SuperATVGet Your RS1 Race Ready You want to tear up the sand with the big boysbut those OEM axles just arent going to cut it. You need the best of the best if you want to turn your Polaris RZR RS1 into a real racing machine. Thats where Assault Industries' MAS 223 Phoenix Axles come in. Theyre designed for the most intense riders and the most extreme conditions. Thanks to Assaults proprietary high temp grease blend and race ready axle construction, Phoenix