BB compatibility Shimano HT II and FSA MegaExo

Discuss light weight issues concerning road bikes & parts.
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floriansantana
Posts: 15
Joined: Thu Dec 25, 2014 8:57 pm

by floriansantana

Hey guys,

I have a question regarding BB compatibility, because I want to change my crankset from a Dura Ace DA 9000 crankset to a Power2Max FSA K-Force Light (the MegaExo one, not the BB386EVO) crankset.

I have an S-Works Tarmac 2016 (OSBB) and currently run a Dura Ace DA 9000 crankset. The frame came with adapters which I used to fit the DA cranks. Can I just replace the crankset with the new FSA K-Force Light crankset from Power2Max? Will the BB measurements be the same for both cranksets?

Please help me out with this!

Thanks in advance.

Best regards,
Flo

Tenlegs
Posts: 284
Joined: Wed Jul 16, 2008 10:37 am

by Tenlegs

24mm axle same as Shimano,
scroll to the bottom all the info is there

https://www.power2max.de/europe/en/Prod ... t-rennrad/

floriansantana
Posts: 15
Joined: Thu Dec 25, 2014 8:57 pm

by floriansantana

Thanks for your answer. I read the technical specs on the website and I googled it too, and most of the results that I got, said, that the are interchangeable. But still, I wanted to ask if it's 100% working.

And I'm not sure how it is working with those adapters from Specialized, that I use. I only find results for Shimano BBs and MegaExo BBs, but I'm not sure if those adapters are the same.

So that's why I was asking the question. I know the axle diameter is 24mm for both, but I'm not sure about the width of the crankset.

Tenlegs
Posts: 284
Joined: Wed Jul 16, 2008 10:37 am

by Tenlegs

You didn't mention what BB adapter your using but if for example it was Wheels manufacturing adapter for OSBB like this-

http://wheelsmfg.com/bottom-brackets/sp ... black.html

you would then also use their BB/PF30 UNIVERSAL ADAPTER FOR 24MM SPINDLE CRANKS (SHIMANO, FSA, ETC.)

http://wheelsmfg.com/bottom-brackets/pf ... a-etc.html

Maybe you might have to play around with spacers/shims but the crank should fit.

floriansantana
Posts: 15
Joined: Thu Dec 25, 2014 8:57 pm

by floriansantana

Ok, thanks for your answer. I'm using the adapters that come with the Tarmac frame, which I think are these: http://www.bikeparts.com/pimage/BPC364502.jpg

The tarmac has an OSBB bottom bracket and with these adapters I fitted a Shimano Dura Ace DA 9000 crankset into the frame and it works very smooth and without any problems. All I need to know is, if someone has fitted a FSA carbon crankset with MegaExo axle into a bottom bracket that works for a Shimano crankset without any problems. And if any adaptions (spacer, etc) are necessary for installation.

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