You can get UST certification without having the undrilled bed, as long as you pay the fee and pass the dimensional tolerance tests. I'm not even sure that you have to pass an air seal test, UST is mostly about making sure every UST tyre will mount on, and stay on, every UST rim of appropriate width.
You can get UST certification without having the undrilled bed, as long as you pay the fee and pass the dimensional tolerance tests. I'm not even sure that you have to pass an air seal test, UST is mostly about making sure every UST tyre will mount on, and stay on, every UST rim of appropriate width.