UCA

[HummerMann]

Most of the aftermarket UCA's have uniballs instead of ball joints. The uniball is bolted to your spindle and cannot rip off. The stock uca's cannot take the angle of an extreme lift and will fail or might even rip out on a hard droop or compression. That is how I understand it.
There was a troll as I remember claiming the wheels were cracking at the spindle joint and falling off his stock H2, and I'm sure someone that's been here longer than me probably remembers all the disinformation he put on the site.