Installing new un26 bottom bracket

tigersarethebest

Hi

I’m putting in a new shimano un26 bb, I’ve cleaned all the threads on the frame and it looks really clean now with no dirt etc, this one has a plastic cup, I know you regrease the metal thread on the bb but do you grease the plastic cup end. My bike is a aluminium frame and not a carbon frame

trevor.hall12

I do both ,lighter coat on the bb threads

tigersarethebest

Thanks I will do that