I can't really find anything on them. Looked on srams site, and the only track cranks they have on there are the truvativ omniums.

Only thing I can find is that they use the GXP external bottom bracket that the omniums use.

Anyone know what the chainline is with this setup? I'm looking to upgrade from my shimano 105's that I have now, and I want to keep the chainline as close to 42mm as possible.

I wouldn't mind knowing the tread factor either.

Opinions?