





Polaris RZR XP Pro Rear Knuckles - 6061 Billet Aluminum, Sealed Bearing Carrier, Direct Bolt-In (Sold in Pairs)
Upgrade Your RZR XP Pro Rear End with Billet Strength
Stop running OEM rear knuckles that are known to wallow out and crack under hard use. The Black Ops Machine Polaris RZR XP Pro Rear Knuckles are machined from 6061 billet aluminum with a sealed bearing carrier for easy serviceability and maximum contamination protection. Hard anodized, direct bolt-in, and sold as a set of 2 spindles — race ready out of the box.
What’s in the Box
Why Riders Upgrade
RZR XP Pro Rear Knuckles vs. Stock Options
✗ Prone to Wallowing & Cracking
✗ Open Bearing Design (Contamination Risk)
✗ Difficult Bearing Service
✗ Inferior Strength
✓ Resists Wallowing & Cracking
✓ Sealed Bearing Carrier
✓ Easy Bearing Serviceability
✓ Superior Strength & Durability
What Riders Are Saying
Wallowed out an OEM rear knuckle after a hard landing in the desert. Put these billet units on and the rear end feels completely transformed — tight and confidence-inspiring. Direct bolt-in made the install straightforward.
— John D., Arizona
The sealed bearing carrier is the feature that sold me. My OEM bearings were constantly contaminated from mud riding. Two seasons on these knuckles and the bearings are still clean and tight.
— Sarah K., Utah
Stop Waiting for Failure, Upgrade Your RZR XP Pro Today!
Invest in the strength and reliability your RZR XP Pro deserves.
Ride with confidence, knowing your rear end is built to withstand the toughest conditions.
Vehicle Fitment
Polaris RZR Pro XPPolaris RZR Pro XP 4
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Upgrade Your RZR XP Pro Rear End with Billet Strength
Stop running OEM rear knuckles that are known to wallow out and crack under hard use. The Black Ops Machine Polaris RZR XP Pro Rear Knuckles are machined from 6061 billet aluminum with a sealed bearing carrier for easy serviceability and maximum contamination protection. Hard anodized, direct bolt-in, and sold as a set of 2 spindles — race ready out of the box.
What’s in the Box
Why Riders Upgrade
RZR XP Pro Rear Knuckles vs. Stock Options
✗ Prone to Wallowing & Cracking
✗ Open Bearing Design (Contamination Risk)
✗ Difficult Bearing Service
✗ Inferior Strength
✓ Resists Wallowing & Cracking
✓ Sealed Bearing Carrier
✓ Easy Bearing Serviceability
✓ Superior Strength & Durability
What Riders Are Saying
Wallowed out an OEM rear knuckle after a hard landing in the desert. Put these billet units on and the rear end feels completely transformed — tight and confidence-inspiring. Direct bolt-in made the install straightforward.
— John D., Arizona
The sealed bearing carrier is the feature that sold me. My OEM bearings were constantly contaminated from mud riding. Two seasons on these knuckles and the bearings are still clean and tight.
— Sarah K., Utah
Stop Waiting for Failure, Upgrade Your RZR XP Pro Today!
Invest in the strength and reliability your RZR XP Pro deserves.
Ride with confidence, knowing your rear end is built to withstand the toughest conditions.
Vehicle Fitment
Polaris RZR Pro XPPolaris RZR Pro XP 4


















