Originally Posted by
rpenmanparker
I agree with everything else you said, but don't quite know what you mean by this. All of my FSA carbon cranks (SL-K Light) for use with outboard mounted bearings (screw threads into a BSA BB) came with Mega Exo BBs. What do you mean that the BB8681 is supposed to be used. Mega Exo is clearly specified in all the FSA literature. Thanks for clarifying this.
Basically there are different types of Mega Exo BB specified for different types of crank. The carbon ones (SLK light, K-Force light) should be using BB8681 or BB8200 (ceramic)). It's hard to find the relevant literature on the current FSA website, but this old document sums it up:
http://www.bike-components.de/bedien...structions.pdf
Some other info here shows that BB8681 is for the carbon cranks and BB6200 (was BB6000) for the alloy cranks
http://www.fullspeedahead.com/storag...-chart-web.pdf