Ranging from 10 to 42 teeth, the 11 speed X DOME delivers an incredibly wide gear range while maintaining even, optimized steps. The single unit ...
"one small cog, one huge leap."
Reviewed by FlanderFlop on Mar 11, 2013
If you have the cash to go XX1, I highly recomend it, if not find a shop that has it in stock and ask them for a look.