Kawasaki Teryx ball joints fail at the snap ring, not the joint itself. That thin clip is the only thing holding a factory joint in the A-arm, and on a machine that has been in production since 2008 it is the part that finally lets go — under hard landings, under load, or simply after enough years. Keller ball joints remove it entirely — the two-piece housing threads into the arm like a nut and bolt. Hardened 4340 chromoly, greaseable, adjustable and rebuildable.
Todd Keller's original threaded design, and one of the widest fitments in the line: the Teryx 750, Teryx 800 and Teryx S, in both two-seat and four-seat form. The same joint serves both positions, so you simply choose how many you need.
Key Features
- Two-piece threaded housing eliminates the OEM snap ring
- 4340 hardened chromoly steel housings and studs
- Adjustable and greaseable for correct stud articulation over years of service
- Rebuildable — a worn joint is serviced, not replaced
- Covers six Teryx variants from 2008 to current
- One joint fits both upper and lower positions on this platform
- Limited lifetime warranty against manufacturing defects
- Made in USA
Built To Solve: Kawasaki Teryx Ball Joint Pull-Out and Snap Ring Failure
- Snap ring shearing and letting the joint separate from the A-arm
- Clunking or knocking from the front end over rough ground and whoops
- Play in the wheel when rocked top-to-bottom on a jack
- Original joints worn out on an early 750 or 800 that has been in service for years
- Torn boots admitting water, mud and grit so the joint wears from the inside
- Replacing the same joint often enough that it has become routine maintenance
Best For: High-Hour And Big-Tire Teryx Builds
- Teryx 750, 800 and Teryx S owners refreshing a tired front end
- Trail, mud and rock riders working the suspension hard
- Owners running larger tires than the machine left the factory with
- Four-seat Teryx 4 owners carrying more weight through the front end
- Anyone who wants a serviceable joint rather than another disposable one
This listing does not cover the Teryx KRX 1000 — that machine uses a different Keller joint and has its own listing.
Specifications
- Material: 4340 hardened chromoly steel, stud and housing
- Design: two-piece threaded housing, no snap ring
- Serviceability: adjustable, greaseable and rebuildable
- A-arm modification: not required
- Positions: one joint serves both upper and lower on this platform
- Warranty: limited lifetime against manufacturing defects, original purchaser
- Manufacturer Part Number: BJK-K-TUL (one joint), BJK-K-TUL-K-2 (two joints), BJK-K-TUL-K-4 (four joints)
Fitment
- Kawasaki Teryx 750: 2008-2013
- Kawasaki Teryx 4 750: 2012-2013
- Kawasaki Teryx 800: 2014 onward
- Kawasaki Teryx 4 800: 2014 onward
- Kawasaki Teryx S: 2021 onward
- Kawasaki Teryx 4 S: 2021 onward
One joint covers the whole non-KRX Teryx family, two-seat and four-seat, from the original 750 through the current S. Fitment is not guaranteed on applications not listed above.
FAQ
Why do Kawasaki Teryx ball joints pull out of the A-arm?
The factory joint is retained by a snap ring seated in a groove. Landings, load and the extra leverage of bigger tires can deform or shear that ring, and once it goes the joint has nothing holding it. Keller joints thread into the A-arm instead, so there is no clip to fail.
Does one joint really cover the 750, the 800 and the Teryx S?
Yes. SuperATV lists a single Keller joint across the whole non-KRX Teryx family, two-seat and four-seat, from 2008 through current. The KRX 1000 is the exception and has its own part.
Will these fit my Teryx KRX 1000?
No. The KRX uses a different Keller joint — order from the Teryx KRX 1000 listing for that machine.
Do I need different joints for the upper and lower positions?
No. On the Teryx the same Keller joint serves both positions, which is why this product is sold by quantity rather than by upper and lower. Choose one, two, or a set of four for a complete front end.
Do Keller ball joints require A-arm modification?
No. Keller joints thread into the factory arm as supplied, so no machining is needed.
Can these be rebuilt instead of replaced?
Yes. They grease and adjust, and the Keller ball joint rebuild kit for Kawasaki services them with a new cup, boot and pin when the internals eventually wear.
Why Keller
Todd Keller designed the two-piece threaded ball joint to fix the one part of a stock front end that keeps failing, and SuperATV now builds and backs the line. The design has barely changed because it does not need to: thread the housing in like a nut and bolt, use a chromoly stud, and make the whole assembly serviceable so a worn joint gets rebuilt rather than binned.
Complete Your Teryx Front End Rebuild
Before ordering, confirm you are on a standard Teryx rather than a KRX, then decide whether you are replacing a single failure or refreshing all four corners — the set of four covers a complete front end, which is what most owners of an early 750 or 800 need at this point. If the boots are torn but the joints are sound, the Keller boot replacement kit is the cheaper fix. If the joints are worn but the housings are good, the Keller rebuild kit for Kawasaki services them. Tie rods and A-arm bushings are worth inspecting while everything is apart.
Installation Video
Official SuperATV installation walkthrough with Todd Keller: How To Install Keller Ball Joints
