Hi Guys,

I really hope you can help advise me on a BB problem I have.

I purchased a bike frame (bankrupt stock) recently which was advertised to have an English threaded bottom bracket.
I purchased a Shimano BB-R60 Ultegra 6800/105 5800 Hollowtech ii English Threaded unit for this but when I got to fitting it, it just fells into the BB shell – too small !
I then got the same BB, but this time Italian threaded – this time it screwed in about a turn and a half and then stops – I haven’t forced it further for fear of damaging the threads of the either the shell or the cups.

So, I’m at a loss really and was hoping with your wide experience you might be able to point me in the right direction…


Thanks in advance,

Jim