Will a Shimano 105 5701 Bicycle Rear Derailleur fit a 9 speed cassette

by dixfourtoes   May 28, 2014  

Im looking for a new Rear Derailleur and can only seem to find a 10 speed 105 and Ultergra.

Help please!!

8 user comments

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yes it will. 9 & 10 speed derailleurs have the same pull ratio, 11 speed is different.

joemmo's picture

posted by joemmo [916 posts]
28th May 2014 - 18:24

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tiagra 4600 or sora 3500 will work just as well Smile

still on the 3rd switch-back of Bwlch !

posted by therevokid [770 posts]
28th May 2014 - 18:25

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It will work, but you'll have fun with the limiting screws to get it to stick to a 9 speed.

Gkam84's picture

posted by Gkam84 [9040 posts]
28th May 2014 - 18:35

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Gkam84 wrote:
It will work, but you'll have fun with the limiting screws to get it to stick to a 9 speed.

how's that? I've been running a RD-5600 on a 9 speed cassette for about 3 years, it's never been a problem.

joemmo's picture

posted by joemmo [916 posts]
28th May 2014 - 18:51

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The 5701 10 speed will not work with a 9 speed cassette. The limit screws don't actually go far enough to let you get all 9 gears. The 10 speed is a narrower cassette surprisingly. I found this out the hard way. Even removing the limit screws doesn't give you more than 8 cogs and a rattle against the 9th. Fortunately for me I built a 10 speed drive train not long after, but no the 5701 won't work.

Tiagra or Sora should be fine though. The current TIagra derailleur is basically the old 9 speed 105.

posted by robdaykin [161 posts]
28th May 2014 - 21:39

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Shimano Tiagra HG50 9 Speed Road Cassette is now available for $16 at chainreactioncycles.com. I'm sure there is a similar price in the Brit Isles somewhere

Charlie Horse

posted by ch [109 posts]
29th May 2014 - 7:04

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OK, haven't tried a 5700 series mech on 9 speed (i have one in a box so I might try it out and check) but I'm surprised it's so different from 10 spd 5600. The difference in width between a 9 and 10spd cassette is no more than 2mm.

joemmo's picture

posted by joemmo [916 posts]
29th May 2014 - 7:48

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Thanks for all advice guys, I have decided to go with the Ultegra RD5600 short cage after all your advice. ProBikeKit has advised the same with the limit screws. Hopefully I can live with until I can upgrade my STI's to 10 Speed. Applause

Geoff

dixfourtoes's picture

posted by dixfourtoes [3 posts]
29th May 2014 - 12:27

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