Subject: Re: Derailleurs Posted by: Rob on August 28, 2006 at 11:52:26: In Reply to: Derailleurs posted by Ben on August 26, 2006 at 22:29:26:

Message: >I am building my first bike piece by piece and I am confused by the labels. I have a 9spd cassette and bought a shimano ultegra rear derailleur. The box on the derailleur says 10 speed, but a friend says it doesn't really make a big difference since my shifters are 9spd STIs. >Will my Shimano Ultegra rear Derailleur (10 spd) work with my 9spd cassette? Yes, the shimano webiste lits the ultegra 10 speed rear derailleur as 9/10 speed compatible. (I suspect shimano would not want to orphan all the 9 speed shimano users so they made their derailleurs 9/10 speed).