Rear CV Axles & Wheel Bearing Kit for Polaris RZR XP/RS1 - Durable

In this review the focus is a practical replacement kit for Polaris RZR rear axles and bearings that aims to combine strength with durability. The Youxmoto Rear Left/Right CV Axles & Wheel Bearing Kit is intended for owners of RZR XP 1000, XP4 1000 and RS1 models from specific years, and the single biggest reason to consider it is the use of 4340 chromoly steel in the drive half shafts, which promises higher load capacity and improved vibration damping compared with standard components.

Key Features

• Compatibility: Fits rear left and right positions on Polaris RZR RS1 2018, 2020, 2021 and RZR XP/XP4 1000 and Turbo models from 2016 to 2019 (excluding S models), making it a direct-fit replacement for those specific pat numbers.
• Material strength: Drive half shafts are made of 4340 chromoly steel, providing superior tensile strength for heavy loads and more reliable service under stress.
• Wheel bearings: Bearings are formed from high-alloy steel with a dust cover seal and prefilled grease to reduce maintenance and resist contamination.
• Environmental resistance: The axle design is specified to operate in harsh environments, tolerating elevated temperatures and corrosive conditions for longer life.
• High CV angle operation: The axle is engineered to perform at high CV angles with automatic circulation lubrication, suitable for low-speed heavy load and high-speed transmission demands.
• Complete rear kit: Package includes 2 CV axles and 2 rear wheel bearings for a matched replacement of the rear axle set, simplifying repairs.

Who It's For

This kit is best for Polaris RZR owners who need a robust, OEM-style replacement for rear half shafts and bearings and who ride in challenging terrain where stronger materials and sealed bearings matter. It suits DIY mechanics and small shops looking for a matched pair of axles and bearings that fit the listed pat numbers without extensive modification.

It is not appropriate for RZR models outside the specified years or for S model variants not listed; buyers with non-specified model years, different part numbers, or those seeking custom-length or performance-tuned race axles should look for model-specific or race-oriented options instead.

Pros & Cons

Pros

• High-strength 4340 chromoly construction offers improved load capacity and reduced vibration compared with typical steel axles.
• Wheel bearings arrive sealed with grease and dust covers, reducing immediate maintenance needs after installation.
• Designed for high CV angles and automatic internal lubrication, useful for varied terrain and demanding driving.
• Sold as a complete rear set (2 axles + 2 bearings), simplifying replacement jobs.

Cons

• Compatibility is limited to specific Polaris RZR years and part numbers; it will not fit models outside the listed applications.
• The listing does not include detailed installation hardware or step-by-step instructions, so some mechanical skill is required for fitment.

Specifications

Brand	Youxmoto
Position	Rear left and right
Compatible Models	Polaris RZR RS1 2018/2020/2021; RZR XP/XP4 1000 2016-2019; XP Turbo 2016-2019 (excluding S)
Material (Axles)	4340 chromoly steel
Wheel Bearings	High-alloy steel, dust cover seal, prefilled grease
Package Contents	2 CV axles + 2 rear wheel bearings

Our Verdict

The Youxmoto rear CV axle and bearing kit is a practical, value-oriented replacement for owners of the supported Polaris RZR models who need stronger half shafts and low-maintenance bearings. With 4340 chromoly axles and sealed, greased bearings supplied as a matched rear set, it delivers durability and easier installation for capable DIYers, making it a sensible buy when the fitment lines up with your machine.

Frequently Asked Questions

Does this kit include both left and right axles?
Yes, the package includes two rear CV axles and two rear wheel bearings to replace both sides.

Which Polaris models are supported?
It fits Polaris RZR RS1 2018, 2020, 2021 and RZR XP/XP4 1000 and XP Turbo models from 2016 to 2019, excluding S models, and matches the listed part numbers.

Are the bearings maintenance-free?
The wheel bearings are prefilled with grease and have dust cover seals for reduced maintenance, though periodic inspection is still recommended.