Boss Bearing Y-ATV-FR-1000-1F5/Y-ATV-RR-1000-2F1 Combo-Pack! Front Wheel + Rear Axle Bearings and Seals Kits Yamaha Raptor YFM660R 2001-2005 Includes: 4 Bearings and 4 Seals for the front wheel; 2 Bearings and 2 Seals for the rear axle All Bearings feature low-drag double lip rubber seals on both sides. Double sealed bearings outperform metal shielded bearings because they keep out dirt and water. 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.