Radius arms keep the rear wheels tracking straight, and on a stock RZR XP 900 they're one of the first parts to bend on rocks and stumps. These boxed, high-clearance radius arms for the Polaris RZR XP 900 and XP 4 900 are four times stronger than stock, curve up and out of the way of obstacles and use a pivot design that lets the rear suspension move freely.
Highlights
- 4x stronger than stock
- High-clearance arch fits the back of the RZR
- Pivoting inner mount moves vertically and horizontally
- Adjustable heim joints
- Hand welded
- Excellent strength-to-weight ratio
- Black or red finish
- Lifetime warranty
Boxed Steel Strength
Each arm is made from extra high-strength, thermo-mechanically rolled steel, the kind used in truck chassis and cranes, then hand welded into a boxed shape. That gives you the confidence to hit whoops hard and climb steep hills without worrying about folding an arm.
A Smarter Pivot
A typical fixed heim end can bind and restrict how the suspension moves. The inner mount on these arms can move vertically and horizontally, so the suspension works naturally and the bushings don't wear out early.
Room to Grow
With full adjustability, you can add a lift kit, high-clearance trailing arms or bigger tires later without hurting ride quality.
Clearance and Looks
The arch follows a high-clearance line that helps the arms slide over obstacles, and the clean boxed design looks great on the back of the machine.
Choose black for a stealthy look or red to make the rear suspension stand out.
Fitment
| Year | Make | Model |
|---|---|---|
| 2011-2014 | Polaris | RZR XP 900 |
| 2012-2014 | Polaris | RZR XP 4 900 |
What's in the Box
- Boxed high-clearance radius arms in black or red
- Adjustable heim joints
- Instructions
Who It's For and What Pairs Well
For RZR XP 900 and XP 4 900 owners who ride rocks or have bent stock arms. Pair them with forward-offset A-arms from RZR XP 900 suspension parts and Rhino 2.0 axles from RZR XP 900 axles.
Installation Notes
Set the heim joints so the rear wheels sit where you want them, then check the alignment. Recheck bolts after the first ride. Instructions are linked below.
- source:
- superatv
- satv_url:
- https://www.superatv.com/polaris-rzr-xp-900-high-clearance-boxed-radius-arms
- fitment_raw:
- Polaris RZR XP 900 2011-2014; Polaris RZR XP 4 900 2012-2014
- install_pdf:
- https://madmin.superatv.com/amfile/file/download/file/507/product/364/
- desc_status:
- rewritten_2026-10-28
