The RCV Performance Pro Series II axles for Polaris RZR Pro R are designed and engineered to handle the most abusive conditions on the planet.  From desert racing to rock bouncing, the Pro Series II is the ultimate in strength and endurance. All 300M construction and our specially developed SPEC grease gives you the peace of mind needed to tackle any terrain.  Tests prove our Pro Series II axles to be 2 times stronger than the OEM shafts. Designed to fit OEM Pro R Rear (left and right)  RCV Pro Series axles are designed, manufactured, and assembled in the USA.300M CV housings and CV internal componentsFixed CVs for ultimate angle (Over 40 degree max operating angle)Plunging fine-spline shaft for reduced friction300M 40/41 spline axle shaftLargest internal CV components in any UTV axleNew proprietary technology for wear resistence and longevity of CV componentsDesigned for extreme racing conditionsRecommended grease: HT1LF-SPECWarranty: Backed by a 1 Year Warranty against breakage to the original purchaser. Warranty does not cover the willful destruction of product. All claims are subject to review.Learn more about our affordable Pro Series rebuild program HERE.Sold Individually** ALL UTV’S WHICH HAVE A-ARMS, RADIUS RODS, TRAILING ARMS OR ANGLES ADJUSTED OUTSIDE STOCK SPECS MUST MEASURE UTV ACCORDINGLY AS AXLE LENGTH WILL BE AFFECTED. PLEASE SEE OUR MEASUREMENT INSTRUCTIONS.