Ball joints carry every bump, landing and steering load on the front of a 2026+ Polaris RZR XP S, and once they develop play the steering gets vague and tires start wearing unevenly. This replacement ball joint comes in three strength levels, so you can match the joint to how hard you ride, from weekend trail use to big tires and high-speed abuse.
Highlights
- Three strength options in one listing
- Every joint has a grease zerk for easy maintenance
- Adjustable steel-on-steel construction
- All options are stronger than OEM
Super Duty 300M
300M steel offers extreme tensile strength and fatigue resistance. With precise design and heat treatment, this stud is made for hard hits, larger tires, lift kits and high-speed riding. Choose it if you push the machine hard or run oversized setups.
Heavy-Duty 4340 Chromoly Steel
A custom 4340 VAR steel stud, heat-treated to an ideal hardness and finished in black oxide. Its breaking strength is nearly twice that of OEM and many aftermarket joints, which makes it a strong all-around choice for weekends packed with hard riding.
Standard Duty
"Standard" doesn't mean weak. These use zinc-plated chromoly and are still stronger than OEM, at a price that makes sense for routine replacement on a machine that sees normal trail use.
Built to Be Maintained
Each joint has a greaseable zerk, so a quick pump of grease after wet or dusty rides keeps it moving freely and pushes out grit. The adjustable steel-on-steel design lets you fine-tune the joint for dependable performance mile after mile.
How Many Do You Need?
This listing is for a single ball joint. Each front corner uses an upper and a lower joint, so a complete front-end job takes four. Replacing them in pairs side to side keeps the steering feel even.
What's in the Box
- (1) ball joint in the strength you select
Who It's For and What Pairs Well
For RZR XP S and XP S 4 owners replacing worn joints or upgrading before a bigger-tire build. Pair them with UHMW A-arm bushings and high-clearance A-arms for a fully refreshed front end.
Fitment
| Year | Make | Model |
|---|---|---|
| 2026+ | Polaris | RZR XP S |
| 2026+ | Polaris | RZR XP S 4 |
Installation Notes
Ball joints press into the A-arms, so you'll need a ball joint press or a shop that has one. No printed instructions are listed for this part. Grease the joint after installation and have the alignment checked.
- source:
- superatv
- satv_url:
- https://www.superatv.com/polaris-rzr-xp-s-ball-joint
- fitment_raw:
- Polaris RZR XP S 2026+; Polaris RZR XP S 4 2026+
- desc_status:
- rewritten_2026-10-28
