Originally Posted by
alcjphil
No, road 11 speed cassettes require a different, longer freehub body.
Only Shimano/SRAM, campag does not. FWIW
Originally Posted by
ColonelSanders
Do you know why that is?
With 10 speeds, the road cassettes and mountain bike cassette would fit on the same freehub body.
Because MTB wheels have 135mm axle widths, whereas road is standard at 130mm. Shimano crammed 11 speeds onto the body by needing to redish the 10spd wheel and a longer freehub body.