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View Full Version : Derailer Compatibility (9/10 speed) kosmo 05-25-2005, 06:27 PM Does anyone know if my road bike 9-speed ultegra derailer will work with a new 10-speed drivetrain? My 9-speed stuff is toast, but the derailer is almost new. Would hate to replace it for no good reason. Thanks! steelbikerider 05-30-2005, 08:00 PM A Shimano rep I used to race with told me that 10 speed levers will shift fine with 9-speed deraillers. Dave Hickey 05-31-2005, 03:06 AM Does anyone know if my road bike 9-speed ultegra derailer will work with a new 10-speed drivetrain? My 9-speed stuff is toast, but the derailer is almost new. Would hate to replace it for no good reason. Thanks! Yes, it will work fine mr meow meow 06-02-2005, 05:16 PM COMPLETELY COMPATIBLE. I have 1500 miles on a DA10 w/DA9 rear derailleur and it works better than the DA10 rear it replaced. Of course, I mangled the DA10 derailleur due to an improperly installed chain so that might be a bit unfair. |