For both safety, performance, and longevity, suspension joints have to be strong and remain friction free. For this reason, we supply parts with a 3-piece design. They're comprised of a heat treated and zinc plated chrome-moly body, a heat treated and zinc plated chrome-moly bearing race with Teflon liner, and a hard chrome plated, hardened 52100 bearing steel ball. The result is unsurpassed strength, durability, and wear resistance.
That doesn't mean that the bits last literally forever, though. When you need to replace the rod ends in your Mk4 Tubular Control Arms, make sure you do it with the same parts that were originally supplied.
Note: Joints priced each. Misalignment spacers not included.