In the classifieds section here:

Chumba hubs/Mavic 819 UST rims. Take a look if you need UST rims/want a backup.

"(Moderators Note: this thread has been locked.)"
(Mtbr Forum Guidelines state that spam posts are not allowed, but we let users who pay for an Mtbr ad, slide. We won't delete your spam post outright, but we will lock it.
There are a few people who attempt to "bump" their spam post for more visibility and this is not allowed. To avoid any problems, all classified ad spam posts are locked. If you have questions about the item or are interested, you can PM or email the original poster.)