Much like human hip joints, ball joints act as pivot points. They are an integral component that connects the various links between your suspension and chassis. As a wheel on your vehicle moves up and down the suspension pivots through ball joints. They allow the suspension to move independently without interfering with the action of the wheel. This independent motion isolates the wheel movement from the chassis, creating a smooth and quiet ride.

There are four main components of a ball joint:

  • Ball Pin:

    the ball portion that pivots and rotates

  • Bearing:

    the component that supports the loads that are applied to the ball pin

  • Housing:

    the part that installs onto the suspension and houses all of the ball joint components

  • Boot:

    the protective rubber cover that prevents contaminants from entering the ball joint

The location of the ball joint determines whether it will be load-bearing or non-load-bearing.

Load-bearing ball joints are subject to continual stress and should be inspected frequently to ensure optimal performance. Depending on suspension configuration (Multi-Link, MacPherson, Double Wishbone, Solid Axle), ball joints may be located on front upper and/or lower control arms, as well as steering knuckles. They may also be found in the rear suspension. Additionally, contingent on suspension design and vehicle application, ball joints can appear as:


In this design, the ball joint is larger than the hole inside the control arm or knuckle. When pressed into the smaller hole in the control arm the ball joint is held tightly in place. This hold can be supplemented by a circlip.


This application uses a mounting flange that bolts onto the control arm or steering knuckle using 2 or more bolts and nuts. Many OEM ball joints come riveted onto the vehicle, and as they wear they are replaced with an aftermarket bolt-on design.


This design completely integrates the ball joint pivot into the control arm assembly, replacing the individual ball joint and forming one solid container arm. OEM aluminum control arms are often unitized. Replacement of unitized ball joints requires that the entire control arm assembly be replaced.


Mevotech innovates every ball joint component. Our engineers focus on improving part life and ease of installation, employing punishing durability testing to validate every new design.


For maximum service life and durability we engineer X-Factor upgrades to keep your vehicle performing longer.

  • PWR-TEK Design
    PWR-TEK Design

    Upgrade to parts that can withstand extreme loading conditions with high-strength steel and larger bearings that are guaranteed not to deform.

  • Knurled Housing
    Knurled Housing

    Precision engineered ridges for tighter grip between connecting components.

  • Locking Boot
    Locking Boot

    Boot design permanently fixes boot to housing and creates perfect seal, keeping out contaminants.

  • Quad Sealing System
    Quad Sealing System

    Additional lips on boot sealing surfaces prevent contaminants from entering into the boot.

  • Increased Ball Stud Diameter
    Increased Ball Stud Diameter

    Increased sphere diameters improve contact pressure and durability of ball pin.

  • Larger/Thicker Housing Flanges
    Larger/Thicker Housing Flanges

    Provides additional strength and stiffness to the ball joint​.  Reduces the likelihood of deformation of the ball joint housing during installation​.  Facilitates the use of a wider range of ball joint installation tools.

  • Greaseable Ball Joints
    Greaseable Ball Joints

    Ball Joint is serviceable allowing the user to continue to grease the ball joint improving the service life of the ball joint.

  • Sintered Metal Bearings
    Sintered Metal Bearings

    Bearings made of a durable sintered powder metal that leads to a longer lasting part.

  • Patented Snap-In Bearing
    Patented Snap-In Bearing

    Oversized sintered metal bearing with large contact area is engineered to accommodate challenges of a worn knuckle.

  • Self-Sealing Grease Relief
    Self-Sealing Grease Relief

    Grease relief that acts like a one-way valve allowing excess grease to flow out of the boot while preventing contaminants entering the boot.

  • REPEL-TEK Coatings
    REPEL-TEK Coatings

    Corrosion resistant coatings that prevent the formation of rust for a longer part service life.

  • Integriboot

    Boot is mechanically locked in place by the housing lamination preventing contaminants from entering the boot.

  • Anti-Corrosion Coatings
    Anti-Corrosion Coatings

    Corrosion resistant coatings that prevent the formation of rust for a longer part service life.

  • Circlip

    Secure the ball joint with the circlip included to provide supplementary retention for the ball joint housing, locking it into place.

  • Patented Directional Bearing
    Patented Directional Bearing

    Allows for proper implementation of upper bearing on ball joints with larger swing angle in one direction. Addition of upper bearing provides additional contact area and greater pressure distribution for less wear.

  • Higher Grade Hardware
    Higher Grade Hardware

    Hardware provided is made with a high grade and strength.

  • Premium Grease
    Premium Grease

    Ball Joint is provided with premium grease that leads to an improved ball joint life.

  • Ball Pin Surface Hardening
    Ball Pin Surface Hardening

    Ball Pins are surface hardened to prevent premature wear and improve fatigue life


To make your installations faster, easier and protect surrounding components, we include handy Labor Savers in the box

  • Ball Pin Surface Hardening

    Additional tool provided in the box that can easily install boots without damaging the boot​.

  • Bootstaller
    Press-Through Boot

    Boot is designed to enable the ball joint to be installed without removing the boot​.  Saves the technician time and reduces the possibility of damaging the boot during installation.

  • Press-Through Boot
    Application-Specific Fitment Analysis

    Engineering is done specifically for the application to ensure perfect fitment of the part on the vehicle​.

  • Application-Specific Fitment Analysis
    Quick Loader Plate

    Ball joint attachment fasteners pressed into attachment plate allows the ball joint to be installed with a single tool​.

  • Quick Loader Plate
    Specialized Tools

    Include specialized application specific installation tools that are not readily available​. Hardened steel socket that technician can use to remove the OEM ball joint and install the TTX ball joint in the steering knuckle.

  • Specialized Tools
    Additional Hardware

    Application specific mounting hardware are included with the part to complete the installation of the part.

  • Additional Hardware
    Easy Snap Locking Pin

    Ensure your ball joint is securely locked with our spring steel locking clip design, nut pre-loaded with fastener adhesive that complies with and exceeds IFI, DIN specifications.

  • Easy Snap Locking Pin
    In-Box Instructions

    Get instructions, advice and warnings directly from our engineers to help you install our parts.

  • In-Box Instructions
    Installation adapter

    Prevent your ball joints from being damaged during installation with high-strength alloy steel adapter tools designed for TTX ball joint installation flanges less than ¼” wide​.

  • Installation adapter
    Anti-Rotation Features

    Parts engineered with anti-rotation features that speed up and give piece of mind during installation.

  • Anti-Rotation Features

    Boots designed to come pre-installed onto ball joint saving the time during ball joint installation.


Get tech tips, product updates and industry insights delivered right to your inbox.