Join Date: Feb 2007
Location: Mid Willamette Valley, Orygun
Bikes: 86 RockHopper,2008 Specialized Globe. Both upgraded to 9 speeds.
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Since one is 9 speed and the other is 10 speed....
EDIT- I jumped too soon again
IF the chain was properly sized for the 23, you'll need to add a link set. Inner & outer link.
Going the other way, no problem, although technically, you would remove one link set. I probably wouldn't, just in case I wanted to switch back.
Last edited by Bill Kapaun; 08-25-08 at 05:53 PM.