Fits the following Polaris models: 2017-2019 RZR XP 1000 & RZR XP4 1000 (excluding 60" S models). The Monster Axles XP Series axle is designed to be stronger, longer lasting, and more dependable, no matter where you ride. Key to its performance, the plunge mechanism is moved from the inner joint to the shaft itself, eliminating issues that cause joints to bind and break. Replaces OEM # (fronts) 1333943, 1333123, 1333283, 1333420, (rears) 1333439, 1333944, 1333858. Set includes: front axles (2), rear axles (2).