All Balls leading technology 8-Ball Extreme Duty axles are up to 40% stronger than OE axles. These complete axles feature enlarged CV joints, bearing cages, and chromoly axle shafts. All internal components are precision ground and utilize molybdenum grease. 
8 Ball AB8-PO-8-340

Rear Left / Rear Right Fitment:

• Polaris RZR 4 XP 900 12-14
• Polaris RZR 4 XP JAGGED X 13
• Polaris RZR XP 900 11-14