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How do i get my hollowtech BB bearings out of the BB?
forum search function for "external BB" or similar, there's a related thread pretty much every week. Basically you can tap out the tophat seals and bearings with a screwdriver or drift and a bit of patience. Easiest way to get new ones in if you need to change em is to freeze em first.
You want 6805 2RS bearings, about a fiver a pair for generics off ebay.
Is this the same bearings and process for Raceface BB's?
Yes, essentially the same BB. I usually leave the cups in the frame(something solid to work against) and soak the cups in a pan of boiling water to expand them.
Skyliner (Kev?) same process but you'll need to check the bearings. I know XT and saint are the same but differnt to LX (Lx are not so wide). Race face etc could be differnt again.
You can also go with a differnt bearing with a smaller internal diameter and get rid of th top hat - Enduro bearings.