Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 8 - Jul 13
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Description
Jeep Wrangler JK/Grand Cherokee WJ HD Non-Knurled Adjustable Ball Joint Kit (SYN4127)Description Our Synergy Jeep JK JKU Adjustable Ball Joint Kit has endured over 5 years of development and over 500,000 test miles! This is the last set of ball joints you will ever have to buy with a Limited Lifetime Warranty. Tighten up your steering for good with our patent pending (# 16 020894) design which is fully adjustable, serviceable, and rebuildable without having to press the ball joints back out of the axle end forging yokes (C's). These
Description
Our Synergy Jeep JK / JKU Adjustable Ball Joint Kit has endured over 5 years of development and over 500,000 test miles! This is the last set of ball joints you will ever have to buy with a Limited Lifetime Warranty. Tighten up your steering for good with our patent-pending (# 16/020894) design which is fully adjustable, serviceable, and rebuildable without having to press the ball joints back out of the axle end forging yokes (C's). These ball joints never have to come back out.
Features
- Fully adjustable and rebuildable lowers are designed to last the life of the vehicle, without ever having to press them out of the inner-c
- On and off road tested for more than 5 years and 500,000 miles providing time tested components you can trust
- Best in class price to performance ratio
- Compatible with all aftermarket axle shafts (including RCV's) with no modifications needed
- Fully greaseable metal on metal ball Joint bearing surface has considerably larger area than stock due to elimination of the inner nylon liner for a longer lasting joint
- Heavy duty, heat treated stud prevents unwanted movement and premature failure
- Improves road manners and corrects sloppy steering
- Patent Pending Lower Ball Joints are adjustable and rebuildable so they always have the correct amount of preload
- Knurled and non-knurled ball joint housing options to fit any vehicle
- CNC machined lower ball joint surfaces from 4140 steel, heat treated, induction hardened, and ferritic nitrocarburized for extreme wear resistance
- Heavy duty, extra large 4140 steel stud for maximum strength and reliability
- Low profile dust boots are made from thick nitrobutile rubber (NBR) protect the joint from contaminants and eliminate any chance of tearing
- Limited Lifetime Warranty
- Zerk fittings included for trouble-free maintenance
Includes
- (2) Upper Ball Joints
- (2) Lower Adjustable Ball Joints
- (1) Ball Joint Hardware Kit for all joints
- (1) Ball Joint Adjuster Wrench to set pre-load
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 2198 reviews
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Product Reviews
★★★★★ 5
Must-Have for Dog Owners (Whow have dogs that like to fetch)
Style: 2.5" Ball
Soon as this launcher arrived I went outside with the dogs to try it out. Long story short: This is a great fetch toy. I am able to launch the ball pretty far with little to no effort, and picking the ball back up is as easy as grabbing it with my own hand.
The toy itself is very sturdy, so much so this is the only fetch-toy I'll ever have to buy. Considering how durable it is, I don't think I'll ever need to buy a replacement. I believe Chuck-It is the most popular option, and because this is the first fetch-toy I purchased, I can't really compare it to anything else. A few outlier reviews said the ball was difficult to launch, and I have to disagree. It has been so easy to use I can't possibly see what the problem is. And no, upper body strength is not a factor as I virtually have none. People can get great distance (Half the length of a football field by my eye) in one simple, easy motion. And if other products can launch the ball farther, so what? How far is far enough? Is your dog going to throw a fit because it went 40 meters instead of 50? No. They will not. For anyone upset this toy doesn't launch far enough, ask yourself this: Is the toy for their dog? Or the human who bought it?
The bottom line is this: It feels like it's built to last, it's inexpensive, and it does what it is supposed to do. So long as a toy is "good enough" I don't see the point in splitting hairs and trying to determine which fetch toy is the absolute best.
Saying it's good enough is a bit misleading though. I can't imagine how a dog toy like this could be any better.
It's a must-have for any dog owner. Unfortunately, only one of my pups likes to fetch...
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Reviewed in the United States on January 6, 2020
★★★★★ 5
Works Like a Charm!
Style: 2.5" Ball
WoW!! This thing is pretty cool! It can pick the ball up off the ground - and with little effort - It can throw the ball 3X Higher and Further than I ever could! It wont hurt my elbow or wrist ( way better than before when I was wearing myself out ) I don’t know how I ever got along without it!! It's a must have if your dog loves playing ball. :-)
Update: I've had this For 7 Months Now- it looks and works Great just like the day I bought it- Thumbs up!
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Reviewed in the United States on September 29, 2024
★★★★★ 5
Better Design - Better Materials - No Sticking
Style: 2.5" Ball
Been using Chuck-It launchers and plastic balls for a very long time and they were always a little sticky on giving up the ball. This makes it tricky to throw grounders with precision and can overshoot the fence in the backyard. A couple of years ago, Chuck-It changed the material to a stiffer plastic that made this problem more pronounced. I even tried custom sanding the cup to get just the right grip.
The Fetch-It launcher (using the Chuck-It plastic balls) uses a three-pronged claw with soft rubbery ends that releases perfect every time. The material costs on this new one are noticeably higher while maintaining a somewhat lower price than the brand name original.
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Reviewed in the United States on January 9, 2026
★★★★★ 3
Meh
Style: 2.5" Ball
It "works" but it isn't very good. The grip is so loose on the ball, it lets go early and doesn't thrown very far. A Chuckit is so much better, I can get 3x the distance with a 25" Chuckit. This thing is kind of a waste.
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Reviewed in the United States on May 25, 2026
★★★★★ 5
Holding up well to my dogs.
These have a squeaker inside. My dogs LOVE them. So far have held up very well. My dogs are hard on toys. The price is right. Do recommend
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Reviewed in the United States on February 18, 2026
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