2011 Big Four model changes?

[Homeslice]

Originally Posted by Tmall

Homie, stop ignoring my statement...

13000 rpm divided by 15,500 =83% difference. Do you think the "lighter valvetrain" offsets the difference in rotational mass? Or is that a buzzword you're just throwing out there?

How do you know that lower RPM is enough to offset the difference?

Nobody is going to know for sure unless they took the weight of all the parts, as well as their size and their distance from the bike's roll center, and made all the necessary calculations.