SKU #: APX-BJ161 MPN #: BJ161

Apex Chassis Super HD Lower Ball Joint 18-25 Jeep Wrangler JL | 19-25 Gladiator JT 4WD

$75.00

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Apex Chassis Super HD Lower Ball Joint for 18-25 Jeep Wrangler JL and for 19-25 Gladiator JT 4WD

Description

If your 2018–2025 Jeep Wrangler JL or Gladiator JT sees real trail time, the lower ball joints are the unsung heroes holding it all together and the stock ones just don’t cut it. Apex Chassis engineered their Super HD Lower Ball Joint to eliminate steering play, handle oversized tires, and stand up to the toughest off-road abuse without premature wear. Built from forged SAE 1045 steel and featuring a heat-treated 4140 Chromoly ball stud, these joints deliver extreme strength and long-term reliability under high loads and constant movement. Apex’s precision bearing and sealing system ensure smooth operation with minimal friction and unbeatable contamination resistance. Like the uppers, they’re available in both standard and knurled versions: The standard version provides a perfect factory-style press fit for OEM knuckles. The knurled version offers a slightly tighter fit for knuckles that have seen multiple replacements or have been machined oversized. Whether you’re daily driving or tackling rock gardens, Apex Chassis lower ball joints restore the solid steering feel you expect from your Jeep — and the durability to keep it that way. HOUSING SAE 1045 Solid Steel Forged Housing: This is unequivocally the best carbon alloy steel for this application. CNC Machined Housing: Make our parts and bearings dimensionally perfect, eliminating any die wear issues. BALL STUDS SAE 4140 hot forged Chromoly Ball Studs: For the strongest possible metallurgy. Induction Heat Treated Ball Studs: Provides a very precise heat treatment to the exact depth and location we want it. Polished Ball Studs: Are built like an anti-friction bearing with extremely precise tolerances. Rolled Threads: Are made by pressing the shape of the threads into the ball stud instead of cutting. This strengthens the threads instead of weakening them and allows for easy movement of hardware. This ain't no Ikea furniture! Step Threads: allows for very easy movement of hardware on install and superior holding when torqued (installer choice). BEARING DESIGN Bronze Bearing design: Our newest improvement in bearing design. Combines our perfectly polished ball studs, encased in a solid steel forged housing, lined with a highly durable, low friction bronze bearing. BOOTS CR Rubber Boots: The most durable material for undercar applications. Resistant to deterioration from road level ozone, oil/gas/engine fluids and extreme heat or cold. Internal Seal Boot: The boot is coined onto the ball joint, for superior sealing against contaminants. HARDWARE Grade 8 - Class 10.9 Hardware: Superior tensile strength. Castle Nut: Industry standard where high vibration loads occur. LUBRICATION Pre threaded Zerk Housing: If you have ever installed a MOOG Ball Joint without a pre-threaded zerk fitting you will understand what a simple but great feature this is. Another installer fav. Greaseable: Because it should be. Pre-Greased: Just in case you forget, we have you covered. Gull Winged Grease Grooves: Allows for improved lubrication disbursement around the ball stud. Zerk Fittings: Included for every application.

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If your 2018–2025 Jeep Wrangler JL or Gladiator JT sees real trail time, the lower ball joints are the unsung heroes holding it all together and the stock ones just don’t cut it. Apex Chassis engineered their Super HD Lower Ball Joint to eliminate steering play, handle oversized tires, and stand up to the toughest off-road abuse without premature wear.

Built from forged SAE 1045 steel and featuring a heat-treated 4140 Chromoly ball stud, these joints deliver extreme strength and long-term reliability under high loads and constant movement. Apex’s precision bearing and sealing system ensure smooth operation with minimal friction and unbeatable contamination resistance.

Like the uppers, they’re available in both standard and knurled versions:

The standard version provides a perfect factory-style press fit for OEM knuckles.
The knurled version offers a slightly tighter fit for knuckles that have seen multiple replacements or have been machined oversized.

Whether you’re daily driving or tackling rock gardens, Apex Chassis lower ball joints restore the solid steering feel you expect from your Jeep — and the durability to keep it that way.

HOUSING

SAE 1045 Solid Steel Forged Housing: This is unequivocally the best carbon alloy steel for this application.
CNC Machined Housing: Make our parts and bearings dimensionally perfect, eliminating any die wear issues.

BALL STUDS

SAE 4140 hot forged Chromoly Ball Studs: For the strongest possible metallurgy.
Induction Heat Treated Ball Studs: Provides a very precise heat treatment to the exact depth and location we want it.
Polished Ball Studs: Are built like an anti-friction bearing with extremely precise tolerances.
Rolled Threads: Are made by pressing the shape of the threads into the ball stud instead of cutting. This strengthens the threads instead of weakening them and allows for easy movement of hardware. This ain't no Ikea furniture!
Step Threads: allows for very easy movement of hardware on install and superior holding when torqued (installer choice).

BEARING DESIGN

Bronze Bearing design: Our newest improvement in bearing design. Combines our perfectly polished ball studs, encased in a solid steel forged housing, lined with a highly durable, low friction bronze bearing.

BOOTS

CR Rubber Boots: The most durable material for undercar applications. Resistant to deterioration from road level ozone, oil/gas/engine fluids and extreme heat or cold.
Internal Seal Boot: The boot is coined onto the ball joint, for superior sealing against contaminants.

HARDWARE

Grade 8 - Class 10.9 Hardware: Superior tensile strength.
Castle Nut: Industry standard where high vibration loads occur.

LUBRICATION

Pre threaded Zerk Housing: If you have ever installed a MOOG Ball Joint without a pre-threaded zerk fitting you will understand what a simple but great feature this is. Another installer fav.
Greaseable: Because it should be.
Pre-Greased: Just in case you forget, we have you covered.
Gull Winged Grease Grooves: Allows for improved lubrication disbursement around the ball stud.
Zerk Fittings: Included for every application.

WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov

Where It Fits:

Vehicle Position: Front Lower
Quantity per Vehicle: 2

About Apex Chassis

APEX STEERING

Apex Chassis is a company that has a rich history in building quality suspension and steering components. After selling their previous company, XRF Chassis, the concept of Apex Chassis was born out of the desire to not try to make a part for everything, but to focus more on a select group: hard working Jeep and 4x4 vehicles. With a focus on a smaller group of vehicles, it's given Apex the opportunity to truly focus on geometry, build quality, and taking their manufacturing to a whole other level. Apex designs, engineers and manufactures everything that has their name on it. This is to ensure the highest level of quality and that their products are built right so to stand the test of time and abuse. Many of the components that have put Apex Chassis on the map are related to steering upgrades, notably their heavy duty, greasable drag links and tie rods for Ram, Ford, Jeep, and GM's. All of these are not your typical auto parts store replacements, rather each features substantially larger diameter material to avoid deflection found in the stock pieces, greasable tie rod ends, and so much more to withstand the rigors of high mileage, offroad use, and larger than stock tires. Above and beyond these parts, Apex took much of what they learned as XRF and offer their line of Extreme Duty ball joints that deliver robust integrity at a price point that's impossible to beat. And the list goes on for Apex steering components.

APEX SUSPENSION

Hopefully you didn't think Apex Chassis only did steering upgrades! That's right, Apex also specializes in heavy duty suspension components to complement their steering upgrades. How about adjustable track bars with with greasable tie rod ends for increased longevity? And why would you want the track bar to be adjustable in length? Easy, if you've leveled or lifted the truck's suspension, it will push the front axle towards the drivers side due to triangulation. By extending the length of the track bar, you are then able to recenter the axle to where it should be, sitting square under the frame rails. Or how about heavy duty sway bar end links to upgrade the stock ones that are known for snapping? Either way, Apex has a lon list of suspension upgrades for your Ford, Ram, Chevy, or Jeep. From the weekend warrior to the long haul driver to those who aspire to race in Baja, Apex Chassis builds top shelf products for your rig to help you take on whatever comes your way.

THE APEX DIFFERENCE

At APEX, they design, engineer and manufacture all of of their SKU's to their own exact specifications. If it says APEX on it, from start to finish, it is their product. Many "steering" companies make tubes and then outsource the most complicated and important part of the system, the ends. At APEX every component in your steering system is designed, engineered and manufactured by APEX to work together for the best possible system. In an APEX steering system, they also ensure that all the geometry is built into the forged steel ends, so you will never see bends in the tubes. Bends in tubes are used as an inexpensive way to re-purpose straight tie rod ends when a custom engineered off-set tie rod should be used.

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