Mega Keller ball joints are for Maverick X3 builds that have already outgrown the strong joints. The tool-steel housing and 4340 chromoly stud are oversized well past a standard joint, using the same two-piece threaded design that removes the snap ring entirely. They are large enough that your A-arms must be modified to accept them — that is the trade you make for the strength.
If your X3 is not running portals, very large tires, or race-level abuse, the standard Keller joint bolts straight in and solves the same problem.
Key Features
- Oversized tool steel housing with an enlarged 4340 hardened chromoly stud
- Two-piece threaded design doesn't require a snap ring
- Easily adjustable, rebuildable, and greaseable
- Robust boot retaining ring prevents water intrusion
- Requires modification of your A-arms to fit
- Sold as uppers, lowers, an upper and lower pair, or a set of four
Built To Solve: Repeat Ball Joint Failure on Heavily Built Maverick X3s
- Standard joints that keep failing on an X3 running portals or 32-inch-plus tires
- Snap ring separation under race or dune landing loads
- Studs bending or breaking rather than the housing letting go
- Front ends rebuilt every season that still do not last a season
- Builds where the A-arms are being modified or replaced anyway
Best For: Portal-Equipped, Big-Tire and Race-Prepped Maverick X3 Builds
- X3s on portal gears carrying significantly more unsprung weight
- Dune and desert riders landing hard and often
- Rock crawlers loading the front end at full articulation
- X3 MAX owners running heavy through the front end
- Experienced installers, or riders willing to pay for professional installation
This is not the joint for a stock or lightly modified X3. The standard Keller ball joint fits without touching your A-arms and removes the same snap ring failure point.
Specifications
- Material: 4340 hardened chromoly steel stud with a tool steel housing
- Design: oversized two-piece threaded housing, no snap ring
- Serviceability: greaseable, adjustable, and rebuildable
- Boot: retaining ring designed to prevent water intrusion
- A-arm modification: required
- Positions: upper and lower sold separately or together
- Manufacturer Part Number: BJKM-CA-MU (upper), BJKM-CA-ML (lower), BJKM-CA-M-K-2 (one upper and one lower), BJKM-CA-M-K-4 (two uppers and two lowers)
Fitment
64-inch models, 2017 onward — including X3 900, Turbo, Turbo R, X DS Turbo R, DS Turbo R, X DS Turbo RR, X MR Turbo, MAX Turbo, MAX Turbo R, MAX X DS Turbo, MAX X DS Turbo R, MAX DS Turbo R, and the 2022+ DS Turbo 64, DS Turbo RR 64, X DS Turbo RR 64, X RC Turbo RR 64, X MR Turbo RR 64, MAX DS Turbo 64, MAX DS Turbo RR 64 and MAX X DS Turbo RR 64.
72-inch models, 2017 onward — including X RC Turbo, X RC Turbo R, X RC Turbo RR, X RS Turbo R, RS Turbo R, X RS Turbo RR, X MR Turbo R, X MR Turbo RR, MAX X RS Turbo, MAX X RS Turbo R, MAX RS Turbo R, MAX X RS Turbo RR, MAX X MR Turbo R, MAX X MR Turbo RR, MAX X DS Turbo RR, and the 2022+ RS Turbo RR 72, X RS Turbo RR 72, X RS Turbo RR with Smart-Shox 72, X RC Turbo RR 72, X MR Turbo RR 72, MAX RS Turbo RR 72, MAX X RS Turbo RR 72, MAX X RS Turbo RR with Smart-Shox 72 and MAX X MR Turbo RR 72.
Mega ball joints require modification of your A-arms. Coverage runs from 2017 and remains open on current models. Fitment is not guaranteed on applications not listed above.
FAQ
Do Mega Keller ball joints really require A-arm modification?
Yes, and it is not optional — SuperATV states it on the product itself. The housing is deliberately larger to make room for a bigger ball and stud, so the A-arm has to be machined to accept it. If that is not on the table, buy the standard Keller joint.
What do I gain over the standard Keller joint?
Size. Both use the same two-piece threaded principle and both delete the snap ring. The Mega adds a larger tool steel housing and a thicker chromoly stud, which matters once the housing is no longer the weak point but the stud still is.
Do these fit both 64-inch and 72-inch X3 models?
Yes, across both widths from 2017 onward including MAX, Smart-Shox and 2022+ trims, provided the A-arms are modified to accept the Mega housing.
Do I need uppers, lowers, or both?
Uppers and lowers are separate parts and are sold individually, as a matched pair, or as a set of four covering two of each. Most riders modifying A-arms do the complete front end at once.
Are they still greaseable and rebuildable?
Yes. Being the strongest option does not make them disposable — they grease, adjust and rebuild like the standard joints, and the Keller rebuild kit for Can-Am covers them.
Should I run Mega joints on a mostly stock X3?
Probably not. Without portals, very large tires or racing, you are paying for strength and install work you will not use. The standard Keller joint already removes the snap ring failure point.
Why Keller
Todd Keller's two-piece threaded design fixed the snap ring problem, and the Mega is that idea taken as far as it goes. SuperATV builds and backs the line. Nothing here is disposable — the joints grease, adjust and rebuild, so a hard season means a service rather than a new set.
Finish Your Heavy-Duty Maverick X3 Front End
Before ordering, confirm three things: your width, your model year, and that your A-arms are modified or will be. If they are not, order the standard Keller joint instead. Riders going this route are usually replacing A-arms at the same time, and the Keller rebuild kit for Can-Am services these joints when they eventually need attention rather than replacement.
Installation Video
Official SuperATV installation walkthrough with Todd Keller: How To Install Keller Ball Joints
