Upgrade your polaris sportsman 800 with this complete front and rear wheel bearing kit from rocky mountain bearings, designed for smooth performance and long-term durability across all terrains. This kit fits all sportsman 800 models from 2005 to 2014, including base, efi, efi ho, deluxe, forest, military ho, and all other sub-models. It also fits sportsman x2 800 models from 2007 to 2009. The kit includes four high-speed precision bearings—two front and two rear—engineered to exceed oem specifications. Each bearing features abec-5 precision, sealed with close contact nbr seals that block out mud, water, and debris, and pre-packed with proprietary synthetic hd off-road grease for maximum protection. It replaces oem part numbers 3514635, 3514917, 3514634, and 3514342, making it a reliable and cost-effective upgrade for restoring smooth handling and performance to your atv. Exceeds oem specifications - extreme close contact nbr seals - synthetic hd off-road water and rustproof grease - abec 5 high speed precision. We recommend using thread locker retaining adhesive or similar for bearing installation. kit# pola006-1