I'm building up a 2010 RIP 9, and went with the 3X10 X9. I've read a couple of articles that state they perform exactly the same, but have a slight weight penalty for the X9 stuff.
I went the 3X route so I could have a big ring for certain races, but replace it with a bash for trail-riding. I also want that 22T small ring when I need it.
I went the 3X route so I could have a big ring for certain races, but replace it with a bash for trail-riding. I also want that 22T small ring when I need it.