Polaris RZR XP 1000 RCV Performance Pro Series II Front Axle. FITS: POLARIS RZR XP 1000 2014–2021, POLARIS RZR XP 1000 Desert Edition 2015, POLARIS RZR XP 1000 DYNAMIX Edition 2019, POLARIS RZR XP 1000 High Lifter Edition 2015–2021, POLARIS RZR XP 1000 Premium 2022, POLARIS RZR XP 1000 Ride Command Edition 2018–2019, POLARIS RZR XP 1000 Trails and Rocks Edition 2018–2019, POLARIS RZR XP 4 1000 2014–2021, POLARIS RZR XP 4 1000 DYNAMIX Edition 2019, POLARIS RZR XP 4 1000 High Lifter 2017–2022, POLARIS RZR XP 4 1000 Premium 2022, POLARIS RZR XP 4 1000 Ride Command Edition 2018–2019, POLARIS RZR XP 4 1000 Sport 2022.The Pro Series II has the same strength as the original Pro Series, but is designed to give an alternative option to suit the needs of different applications and conditions such as mud and endurance racing. The Pro Series II features a sealed outboard CV with a new accordion style boot made from high strength materials! Tests prove RCV Pro Series front axles to be 2 times stronger than the OEM shafts. Direct OEM fit replacement. 100% manufactured and assembled in the USA. 300M axle shaft CVs feature 4340 chromoly body & 300M internals - Inner CV plunges 2.25" 33 spline 300M center bar with plunging inboard CV eliminates halfshaft pull-out Designed for extreme racing conditions Sold individually.