Fits the following Polaris 4x4 models: 2015-2025 RZR S 900 -60 inch, 2015-2018 RZR 4 900, 2016-2025 RZR S 1000 -60 inch, & 2016-2025 General 1000/1000-4P * Features stronger than OEM chromoly forged steel axle bars * Greased with a moly based grease to provide superior joint lubrication * Fitted with neoprene CV boots for added wear and puncture resistance * Compressed Length: fronts - 692 mm, rears - 686 mm, inobard Spline Count: fronts - 22, rears - 28, outboard Spline Count: fronts - 26, rears - 26 * Replaces Polaris OEM # (fronts) 1333263, 1333946, (rears) 1333081, 1333947.