If you own a Jeep Wrangler JL or Gladiator JT, chances are your factory ball joints have seen better days. The factory design is known to wear prematurely, especially once you add bigger tires, lift kits, and real off-road miles. Luckily, Apex Chassis has stepped in again with their Super HD Upper Ball Joint, built to handle everything from daily driving to hardcore trail abuse.

Apex Chassis has decades of experience engineering steering and suspension components for heavy-duty and off-road applications, and the Super HD Upper Ball Joint is the latest result of that know-how. Whether you’re battling wandering steering, uneven tire wear, or the early signs of the dreaded Jeep “death wobble,” these upper ball joints are designed to tighten up your front end and restore control.

Available in both standard and knurled versions:

• The standard version is a direct-fit replacement for most OEM aluminum knuckles.
• The knurled version is intended for vehicles that have had two or more previous ball joint replacements and need a slightly tighter press fit for proper retention.

Every Apex Chassis joint is built from the ground up with premium materials and precision engineering:

HOUSING

• SAE 1045 solid steel forged housing – the best carbon alloy steel for this type of application.
• CNC machined for exact tolerances and perfect fitment.
• Knurled housings (on the knurled version) provide a secure grip in previously worn knuckles, ensuring the ball joint stays tight where others may loosen up.

BALL STUDS

• SAE 4140 hot-forged chromoly for ultimate strength and toughness.
• Induction heat treated for precise hardening only where it matters most.
• Polished ball studs act like precision bearings for smooth, low-friction movement.
• Rolled and step threads for superior strength and effortless installation—no “Ikea furniture” frustrations here.

BEARING DESIGN

• Bronze bearing liner design combines low-friction movement with long-term durability.
• The ball stud rides in a precision-fit bronze sleeve, giving it the strength of a forged housing and the fluid motion of a bearing.

BOOTS

• CR rubber boots are built to survive harsh road conditions, oil, chemicals, and extreme temps.
• Internal seal design keeps out water and debris while locking in grease for longer service life.

HARDWARE

• Includes Grade 8 / Class 10.9 hardware and castle nuts for reliable clamping under vibration and load.

LUBRICATION

• Pre-threaded zerk housings make maintenance a breeze—no more struggling to install fittings.
• Greaseable and pre-greased for immediate use and easy upkeep.
• Gull-winged grease grooves ensure even distribution around the ball stud, preventing dry spots and wear.
• Zerk fittings included with every joint.