If you have a Team Associated B5 or B5M, you’ll want to check out these new Factory Team Rear Hubs. Made of aluminum and anodized in either blue or black, these hubs have the toe angle laser etched on them and include composite bearing inserts to minimize slop and extend bearing life.
These hubs are a direct replacement for the stock plastic hubs. The only real difference (other than being aluminum) is the modification of the ball stud mounting; it goes from a horizontal mounting position to a vertical mounting position. This allows a much finer roll center adjustment.
#91548 Aluminum Rear Hubs, blue
#91549 Aluminum Rear Hubs, black
#91550 Rear Hub Bearing Inserts
[source: www.rc10.com]