Boss Bearing P-ATV-ARM-1001-5I2-7 Rear A Arm Bushings Kit Polaris Sportsman 400 4X4 2001-2005 Our bushings feature an impressive 20% higher tensile strength than Delrin. Kit Contains: All the bushings and spacers to do one rear a-arm. If you'd like to do both sides of the ATV, please order 2 kits.