Originally Posted by TeamCNY (Post 16445565)

Hahaha..... You would spend a bunch of your time if you posted this in every thread where someone wants to replace a component, and they were looking at lighter options, even if the rider's level of performance doesn't warrant the "upgrade".

Unfortunately for me, the marketing of nice bike-stuff is equally as effective as the marketing of fast-food. My job.... don't get carried away with either one!

Originally Posted by Amesja (Post 16445867)

I'm fairly certain that you can substitute a regular Shimano Hollowtech BB for that MegaEXO unit. That is if MegaEXO is MegaEXO across the FSA product line and there aren't two different standards.

Originally Posted by Drew Eckhardt (Post 16458022)

It's not.

There are at least two different MegaExo bottom bracket widths (I've had them side-by side after some one sold me a second hand SLK-Light crank with the SLK bottom bracket):

Those made for non-Light (SLK, K-Force) solid arm carbon cranks have a wider non-drive side bearing which mates to their longer axle and thinner arm. The BB-8000 is the affordable steel bearing variant.

http://bikeforums.net/attachment.php...hmentid=362320

Those made for the "Light" (SLK-Light, K-Force light) hollow arm carbon cranks have a thinner non-drive bearing cup to accommodate the crankset with a shorter axle and thicker arm. The BB-8681 is the affordable steel bearing version

http://bikeforums.net/attachment.php...hmentid=362321
and there's a newer BB-8681/DI2 with the same cups but a thinner spacer making room for internal cables

http://bikeforums.net/attachment.php...hmentid=362322

FSA sells at least two other types of MegaExo bottom brackets which pair with alloy cranks and I wouldn't be surprised to see similar differences (maybe due to arm size, maybe due to the angle sort of like how low profile Record/Chorus square taper cranks took a narrow 102mm axle while the others took a 111 or 115mm axle).