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So I've acquired a trek ransom 7 frame from 2015, I want to build it up but realise it has a pf 90/95 bb but what cranks and bb will fit. It's a budget build too so not. Looking at mega expensive cranks, oh and 10speed. I have no idea where to start I'm used to a threaded bb.
get something Shimano and you'll be fine, you can use a GXP as well but IMO you would do better not to go that route with all the repeated changes SRAM make with BB standards.
any HT2 24mm axle will fit, as for 10,11,12 that is your call and your budget.
This is the bottom bracket you are looking for, although I believe that you can get some others.