bossbearing both front prop shaft u joint for polaris sportsman 500 ho 2002 2003 2004 greaseable bossbearing high quality, greaseable universal joint for polaris atv's. features an upgraded stainless steel roll pin which is stronger than oem and is also corrosion resistant! contains: 2 universal joint; 2 stainless steel sheer pin/roll pin; 2 zerk fittings; 2 plug; 8 sirclips