Front axles on a Pro XP do not usually fail dramatically. A boot splits somewhere you did not notice, the grease walks out, grit walks in, and three rides later the joint is clicking in a turn. Then you are pricing a factory axle, finding out what one costs, and deciding whether to limp around in two-wheel drive until spring. The 4XPRO Front CV Axle for the Polaris RZR Pro XP is the part that ends that math: a fully assembled heavy-duty replacement for $150.00.
Fully assembled, out of the box
4XPRO builds this as a heavy-duty replacement front CV axle for hard trail, mud and work use, and ships it fully assembled with inboard and outboard CV joints and neoprene boots, so it installs straight out of the box.
That matters if you have ever bought a bare shaft or a joint-only kit. Rebuilding a CV in your own shop means a press, a vise, clean hands and an afternoon, and it means getting the grease quantity right — too little and it runs dry, too much and it blows the boot. A complete axle is a bolt-in: pull the hub, pull the old shaft, slide the new one in, torque it, go ride.
Neoprene boots are the detail worth noting, since the boot is what actually kills most axles. The joint itself is rarely the first thing to go.
The numbers that matter
Three specs tell you whether an axle is the right one, and 4XPRO publishes all three. This axle replaces OEM #1334389, has 28 inboard splines and 28 outboard splines, and measures 29.75 inches compressed.
Check the OEM number against the one on your machine rather than going by model name alone. Polaris used several front shafts across the Pro XP and Turbo R years, and the spline count and compressed length are how you confirm you have the right one before anything comes apart.
Specs
- Replaces OEM #1334389
- Inboard splines: 28
- Outboard splines: 28
- Compressed length: 29.75"
- Fully assembled with inboard and outboard CV joints and neoprene boots
- Fits either side — left or right
Fitment
- 2020-2025 Polaris RZR XP PRO / XP 4, all models (4X4)
- 2020-2022 Polaris RZR XP PRO TURBO (4X4)
- 2022 Polaris RZR TURBO R (4X4)
- 2022 Polaris RZR 64" T MP 4 (4X4)
Confirm your year, make and model — and the OEM number on the axle you are replacing — against the fitment list before ordering.
Who it is for
The owner who wants the machine back on the trail this weekend without a dealer-parts conversation. At $150.00 a fully assembled axle is cheap enough that a lot of people buy two and keep one in the trailer, which is the right move if you ride remote or ride in mud. It is also the sensible choice if you are chasing a click or a vibration and want to eliminate the axle as a variable rather than rebuild it.
While you have the corner apart, look at the boots on the other three shafts and at the wheel bearing. Axles rarely fail alone, and a torn boot on the opposite side is a lot easier to deal with now than on the next ride.
Order it at SxS Outpost
The 4XPRO Polaris RZR Pro XP Front Left/Right Axle is $150.00 and is backed by 4XPRO's two-year fault-free warranty. It ships direct from 4XPRO's Florida warehouse. See the rest of what fits in the Polaris RZR Pro XP and Polaris RZR collections, or browse the full Axles lineup.