Here is the King Headz replacement, beautiful machine work. I don't expect it to break like the stock Losi plastic part. I also noticed that the hinge pin had wear marks only on the ends, which means the pins mostly rotated with the a-arm. This tends to wear out the hinge pin plates, but the King Headz part has small set screws which locks the pins so the a-arm rotates around the pin, the a-arm has far more bearing surface than the hinge pin plates and the suspension should stay tighter (less slop) longer. I guess it wouldn't hurt to ream out the a-arms as well.
