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I've been running a Truvativ X0 crank on my hardtail with an external BB from Hope, plus the adapter to take the GXP crank.. However I'm about to purchase a new frame that has an already installed Shimano BB30..
So what do I need to get it to fit? I'm guessing putting the adapter rings in the new frame won't work!?
Or do I also have to buy a GXP BB30?
Cheers
Shimano don't do bb30.
There's pressfit bb90.
Theres bb30.
There's pressfit bb30.
What frame?
I realised that after I posted, it's the Yeti AR-Sc frame..
You'll be wanting one of these.
http://www.chainreactioncycles.com/Models.aspx?ModelID=55293
Thanks a bunch! But, won't the bearings on that be terrible? Do I basically just need a GXP BB92? Although it's a 73mm shell width..
Wait, so am I right in thinking that you can't run any GXP cranks on the frame at all..?
What year?
I was under the impression it was bb92.
Puzzled I am.
Does it look like this? (bb is in)
[img] 
[/img]
I'm really confused about this too.. it's 2009.
So I thought, ah, it must be the Truvativ GXP BB with ceramic bearings.. but that says it's for 92mm shells.. and in brackets says that standard GXP is 68 - 73mm shells.. so which is which?!
Confused.com
It is BB92 (which is misnomer as the shels are 89.5mm or 91mm but we'll skip over that).
If it has threads its 68/73.If not its 92.
that's it in the photo, yeh.
However, the description says it's press fit, which it is, judging by the picture, but also says it's a 73mm shell..
AOB, your not being very clear. what says its a 73mm shell, the frame or the BB?
Sorry.. i msorry i mean the description says its a 73mm shell in the specs of the frame.. but says its press fit in the description of the frame
Thats just the Yeti I.T web guy being dumb. The press-fit linked above is what you need as others have said.
No wonder ive been getting so confused! so its bb92 then.. ok thanks for your help guys much appreciated!!