Quad Boss Rugged Middle / Rear Axle Polaris Hawkeye / Sportsman The Rugged Series Axles by QuadBoss boast six oversized ball bearings, meticulously ground internal components, and pre-applied lubrication from the factory. Sealed axle joints come with stainless CV boot clamps already installed. These robust replacement shafts not only meet but often surpass strict OEM tolerances and quality control benchmarks, offering up to a 30 increase in strength compared to stock options. Fitment: On 2017 Sportsman 570 6x6, fits middle left or middle right position only (does not fit rear) On all other models listed, axle fits rear left or rear right position Features: Easy to install, pre-assembled axle half shaft with CV joints 6 precision ball bearings allow for smoother operation and increased joint strength Up to 30 percent larger cages and races - increasing strength and durability 4340 chromoly-steel axle bar Factory-lubricated using high temperature, high load-bearing moly grease Pre-installed low profile stainless steel clamps Heavy-duty neoprene boots create a waterproof seal Includes spindle nut and washers where applicable (vehicle specific) Sold each (per corner) Note : Image for reference only. Actual product varies with application.