Self-lubricating Bushings Knuckle All Balls Rear Independent Knuckle Side For Polaris Kit 50-1212 2 kits required per vehicle. Rear Independent Suspension Knuckle Kit. This cost effective kit contains all the miscellaneous components to repair the rear upper and lower knuckle. Polaris Farmhand 450 HD 2017. Polaris Hawkeye 325 2x4 2015 1-year covers you throughout planting and harvesting seasons All metal bushings are case hardened and plated to prevent wear and corrosion. 2 kits required per vehicle. Please verify this is the right part number you need... Self-lubricating Acetal nylon bushings protect better against wear and performance. Rear Knuckle - Polaris SPORTSMAN 500 HO| Alberta Motorsports Sales & Salvage Ltd 100% new Kit meets OEM quality for tractors and farm equipment