Originally Posted by
oysf
I have a Dura Ace 7400 7 speed groupset, with 7 speed casette, front derailleur, 7 speed downtube shifters, and i'm looking for the last bit, a rear derailleur. I see most of the 7402-derailleurs is 8 speed, will these work with my 7 speed setup?
Dura Ace, up through the 8S had a unique pull ratio for the rear derailleur. Your DT shifters will need to be a
DA 7s or 8S to match the RD. The other work arounds are to use any 9S indexed shifter with the DA RD or to match a non DA RD with a non DA shifter. Friction shifting is also an option.
Brad