Boss Bearing 41-3334B-10A5-4 Rear Axle Bearings and Seals Kit Polaris Trail Boss 330 2003-2012 Kit Contains: 2 Tapered Bearings and 2 Seals All Seals are double lip and rubber encapsulated with internal stainless garter spring for maximum sealing performance. A FREE helpful installation tip sheet will be included in all wheel and axle kit purchases.