Join Date: Oct 2007
Location: West Yorkshire, United Kingdom
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All Shimano HT2 cranksets (of which the M770 is) come with a BB if you buy a retail retail boxed one, you would need to check the listing you are buying from, if getting from ebay. as for BB size, this isn't important for HT2 MTB cranksets, as they are all 73mm, and come with spacers (3 of) to to take it to 73mm if your shell is 68mm.
Edit: clafify all MTB HT2 cranksets inc a BB, road ones don't come with a BB in retail packs
Last edited by jimc101; 10-19-11 at 04:09 PM.