My personal opinion is that I would use the shield if it will work with the conversion. I am assuming you are changing to disk. This shield will help protect the inner seal. I have installed it in my disk conversion with stock bearings.
When I disassembled my brakes, one of the shields was missing. I got one from one of the guys on the swap meet board that parts out trucks.
Personally, I will run the rollers until or if they need replacing.
Last edited by Lonnie Gallaher; 06/09/2009 6:41 PM.