Boss Bearing P-ATV-ARM-1004-5I5-1 Rear A Arm Bushings Kit Polaris Ranger 500 2x4 4x4 EFI CARB 2006-2010 These are an aftermarket replacement for Polaris OEM part number 5438895 or 5434548. Kit will replace the rear suspension upper, lower and knuckle pivot bushings on one side. Kit Contains: 12 Precision CNC-Machined Nylatron Polyamide Bushings, which feature an impressive 20% higher tensile strength than Delrin