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I'm a newbie to this group and would like some help with a small problem. I have a Shimano STX rear
derailleur from a 15 speed MTB, question is a) will it work on a 21 speed MTB? and b) it has a short
connection to the frame on the original bike where the 21 speed has a long one, will this make any
difference? Apologies for lack of technical terms.
MTIA
Irving
It should work. They all have the same pull and the same throw. I don't think the length of
connection will make a difference.
Many thanks for your help, tried it and it seems to be ok.
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