Certain areas of 1:8 scale cars can certainly benefit from some aluminum action, the rear hubs being one of these areas. New from AE are these alloy hubs anodized in Factory Team blue that come complete with molded axle height adjustment inserts. These inserts change the axle height, allowing you to fine tune the cornering ability of your RC8B3 (or B3e).
Optional bearings and bearing inserts are required but not included in the kit.
#81077 Team Associated Factory Team Aluminum Rear Hubs, Pair
#81078 Team Associated Factory Team Rear Hub Inserts, Pair
#91564 Team Associated Factory Team 8x16x5 Bearings, 4
[source: www.rc10.com]