The Pro Series II is designed to suit the needs of different applications and conditions from trail riding to desert racing. The Pro Series II features a sealed outboard CV with our new accordion style boot made from high strength materials!Tests prove our Pro Series YXZ rear 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- 33 spline 300M center bar- Designed for extreme racing conditionsRecommended grease:HT1LF-SPECWarranty:Backed by a1 YearWarrantyagainst 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 programHERE.Sold Individually**ALL UTV’S WHICH HAVEA-ARMS, RADIUS RODS, TRAILING ARMS OR ANGLESADJUSTED OUTSIDE STOCK SPECSMUSTMEASURE BIKE ACCORDINGLY AS AXLE LENGTH WILL BE AFFECTED. PLEASE SEE OURMEASUREMENT INSTRUCTIONS.Yamaha changed the wheel bearing design on the front from ‘16 to ‘17. On the ‘17 YXZ, Yamaha supplies a collar on the OEM front outboard CV joint that needs to be retained and transferred on to our front outboard CV joint. If the customers have '16 then the axles should be direct drop in replacements. We do not supply this collar for the '17 YXZ's with the axles.OEM Part number: Collar -- 90387-30008-00#24 on the diagram:https://www.yamahapartshouse.com/oemparts/a/yam/5762de1087a86610f0f780e7/front-wheel <br />

All RCV products are built to order ship times vary, most items ship in 1-6 weeks, this is an estimate not a guaranteed time frame.