Im getting a new crank ultegra 6800 and switching out the BB also , my bike has a BB86 .. Will this dura ace BB work on my bike?? Shimano Dura Ace 9000 BB92-41B Press Fit Bottom Bracket | Road Bike Bottom Brackets & Cups | Merlin Cycles

If it's the same as this: Shimano Dura Ace BB86 Bottom Bracket | Backcountry.com, then yes.

You shouldn't need to swap BB's if you're staying within the Shimano family?

Yeah I'm not sure what kind of BB I have I think it may be an FSA BB ,, do I have to change the BB if its an FSA one

I think i may hae an FSA BB but im not sure on it .. Do i have to change my BB to match shimano's cranks ??

If the frame has BB86, or more likely PF86 or BB386 EVO, then you would need a corresponding bottom bracket that fits, and depending on what kind of crankset you want to run, you have to get the right one. So you have two things you to worry about when picking the bottom bracket: the bottom bracket type (standard 24/BB30/PF30/PF86/BB386/etc.), and the crankset type you want to run (Shimano Hollowtech II/SRAM GXP/Campagnolo PT/UT/etc.). Now if you just tell us what frame this is, we can probably tell you what it has.

It is a Fuji Roubaix 1.1 2014... thanks you've been very helpful. oh and i'm getting an ultegra 6800 crank

would this BB fit my Bike

https://www.competitivecyclist.com/sh...B&gclsrc=aw.ds

This should work: the cups will be pressed into the BB86 frame, and the 24x37x7mm bearings in the cups will allow you to run the Hollowtech II crankset. I agree the bottom bracket numbers are all very confusion to someone new.

thanks alot very helpfull i got the ultegra bb86 should be getting in soon

and yeah the BB number can confusing much