Polaris RZR RS1 Radius Arms

Your RZR RS1's rear suspension geometry matters—especially when you're pushing hard through rough terrain or adding bigger tires and a lift. Stock radius arms can limit how naturally your machine moves and can wear out faster when you start modifying. These radius arms from SuperATV are built to let your suspension work the way it's meant to, without fighting against it.

How They Work

The key difference is in the pivot design. Instead of a fixed connection point like a traditional heim joint, these arms use an industry-leading pivot that lets the inner mount move both up and down and side to side. That means your bushings stay happy and last longer, even when you're running a lift kit, high-clearance trailing arms, or oversized rubber. You get better suspension action without the premature wear.

Built Tough

SuperATV makes these from extra-high-strength steel—the same material used in truck frames and heavy machinery. You're looking at roughly 4 times the strength of what came on your machine from the factory. The whole thing is backed by a lifetime warranty, so you know where they stand behind the product.

What You Get

• Rear radius arm pair for Polaris RZR RS1 (2018–2022)
• Thermo-mechanically rolled steel construction
• Full vertical and horizontal pivot movement
• Lifetime warranty coverage

Fitment Notes

These fit 2018–2022 RZR RS1 only. They will not work with Polaris rear bumpers, so you'll need to plan accordingly if you have one installed. Color note: Voodoo Blue and Velocity Blue finishes do not match Sky Blue.