Starline Kustomz


Sale price$869.75
Need preinstalled ball joints?:Super-Duty 300M


Get a Smoother Ride
Riding a rough trail in your Polaris RZR Trail S 900 doesn’t have to beat you up. Get SuperATV’s High Clearance A-Arms to cruise over rocks, branches, and more. With stronger construction than stock, 1.5” of extra ground clearance, and adjustable camber, you get a smoother, stronger ride that will take you anywhere.

More Ground Clearance
The precise high clearance bends on our A-arms give you 1.5” more ground clearance without compromising strength. You’ll be able to cruise right over more obstacles. That makes for a smoother ride and the ability to take on tougher trails all without a lift.

Unmatched Strength
When you’re flinging dirt on a tight trail, you need suspension that will last. Lucky for you, these control arms are made with 1.25” diameter tubing that’s 25% larger than stock. They won’t die when you clip a tree. The UV-resistant powder coating looks fierce and keeps your arms corrosion free. Plus, they include self-lubricating UHMW bushings preinstalled.

To top it all off, they’re backed by a lifetime warranty.

Full Camber Adjustability
Our adjustable pivot blocks come preadjusted to stock dimensions right out of the box so you don’t have to mess with them if you don’t want to. But if you add a lift or weight, you can fix your camber, save your tires, and get better control.

Learn more about what camber is, how it affects your ride, and how to adjust it perfectly.

Let SuperATV Do the Work - Preassembly Available! Want to spend more time on the trails and less time in the garage? Purchase a set of SuperATV ball joints with your control arms and we’ll install them for you for free! We save you money and time so you can get back to doing what you love.

NOTE: You must re-use your stock ball joints if you don’t select a pre-installed ball joint at checkout.

Super Duty 300M Ball Joints
We took the strongest ball joint material on the market—300M grade steel—and combined it with our superior design engineering to make the strongest ball joint on the market. It comes with an easily-accessible grease zerk and an adjustable steel-on-steel design, making it easy to keep your ball joints maintained and flexible. At 2.25x stronger than stock, you won’t find a better ball joint.

Heavy-Duty Ball Joints
Our heavy-duty ball joints are designed with ultimate performance and convenience in mind. Whether you’re doing flips or chasing hills, our proprietary blend of hardened 4340 VAR steel and zinc plating means this ball joint can take it. Our heavy-duty ball joints also come with easily-accessible grease zerks and an adjustable design. Extensive lab and field testing shows that our heavy duty ball joints can withstand double the pressure of an OEM ball joint!

Standard Duty Ball Joints
SuperATV’s standard replacement ball joints give you OEM quality without the OEM price! They’re made with hardened chromoly steel studs and housings—all zinc plated—for superior strength and longevity. All of this delivers a ball joint that’s as strong as or stronger than stock.


  • Polaris RZR Trail S 900 : 2021+