wilhelm-S Posted March 9, 2016 Posted March 9, 2016 I would like to upgrade my cranks...How do I know which cranks go with my Bottom Bracket? I think I have a PressFit BB Are they all intercompatible? Next time I see a nice deal can I just buy or do I need to look for a specific system?
s14phoenix Posted March 9, 2016 Posted March 9, 2016 what make of cranks do you have fitted now? Shimano or Sram or other?Which model? Deore/SLX/X5/X7?
wilhelm-S Posted March 9, 2016 Author Posted March 9, 2016 Custom SRAM S-1250, GXP spindle, 36/22, 104/64mm BCD spider
droo Posted March 9, 2016 Posted March 9, 2016 If you buy GXP again you can keep the same BB, if you buy Shimano you'll need to buy a Shimano BB.
Eugene Posted March 9, 2016 Posted March 9, 2016 Custom SRAM S-1250, GXP spindle, 36/22, 104/64mm BCD spider You mention pressfit above, but state GXP here. They are two different standards. However, it is possible that you are running with an adaptor. There are adaptors that allow you to use a GXP crank in a pressfit bb, but not the other way arround. I am also assuming that when you speak of pressfit, you are speaking of the BB30 standard. Anyway, to answer your question, no they are not all compatible. Some are, some aren't. Rather make sure before hand.
s14phoenix Posted March 9, 2016 Posted March 9, 2016 so if you buy sram cranks they will have to be GXP cranks. not BB30 or any other. So for any crank that is not GXP you will need a new BB.
Thomo Posted March 9, 2016 Posted March 9, 2016 Check your frame too - some frame BB's exclude some cranks.
SLEASK Posted March 9, 2016 Posted March 9, 2016 You mention pressfit above, but state GXP here. They are two different standards. However, it is possible that you are running with an adaptor. There are adaptors that allow you to use a GXP crank in a pressfit bb, but not the other way arround. I am also assuming that when you speak of pressfit, you are speaking of the BB30 standard. Anyway, to answer your question, no they are not all compatible. Some are, some aren't. Rather make sure before hand. You do get a Pressfit GXP BB.
droo Posted March 10, 2016 Posted March 10, 2016 You mention pressfit above, but state GXP here. They are two different standards. Negative. Pressfit GXP fits into a BB92 shell. You're thinking PF30, which is a different shell size and a 30mm spindle.
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