Polaris RZR Trail 900 Keller Ball Joints


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An Innovative, Two-Piece Ball Joint
The biggest problem
with OEM ball joints is that they’re held in by a flimsy snap ring. All it
takes is one big hit to push right past it and put a stop to your ride. That’s
what Keller Ball Joints are built to fix. They use a threaded chromoly housing
that won’t pull out just from hard impact or running huge tires. It’s no
wonder why the original Keller design is still the best for your Polaris RZR
Trail 900.

The Industry’s Best Durability
Keller Ball Joints were the first threaded ball joint on the market. The joint
presses into the A-arms and then the housing threads onto the joint giving you
a nearly unbreakable ball joint. The housings are made with durable tool steel
and the stud is made from a high-quality chromoly alloy for incredible
strength. To top it all off, they’re easily adjustable and greaseable so you
can keep them running smooth for years.

Ride Your

Lift your RZR Trail 900, put on massive tires, and go hit
some jumps! By eliminating the need for a weak snap ring, Keller Ball Joints
can handle every kind of extreme ride. They’re designed to stop your weekends
from being interrupted by a pointless ball joint break.


  • 4340 hardened chromoly steel construction
  • Two-piece threaded
    design doesn’t require a snap ring
  • Easily adjustable, rebuildable,
    and greaseable
  • Robust boot retaining ring prevents water


  • Polaris RZR Trail 900 : 2021+

Additional information


1 Ball Joint, 2 Ball Joints, 4 Ball Joints