Will a Deore M5100 ...
 

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Will a Deore M5100 11sp mech work with a 12sp shifter?

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I have a Shimano Deore M5100 (11 speed) derailleur, and a Deore M6100 (12 speed) shifter and cassette - will they work together?

Are the M5100 and M6100 derailleurs basically the same?


 
Posted : 05/03/2023 7:10 pm
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I think so. I have the opposite. 6100 mech with 5100 shifter and cassette. Only difference between 5100 and 6100 mechs may be jockey wheels designed to work better with HG+ cassette on 6100?

Try it and see. I expect it will be fine

Edit- this video says they are identical


 
Posted : 05/03/2023 7:18 pm
 cp
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I have a Shimano Deore M5100 (11 speed) derailleur, and a Deore M6100 (12 speed) shifter and cassette – will they work together?

Are the M5100 and M6100 derailleurs basically the same?

Yes it will work perfectly. I use the 5100 rear mech with slx 7100 shifter.


 
Posted : 05/03/2023 7:36 pm
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Excellent, thank you.


 
Posted : 05/03/2023 8:20 pm
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Yes, it will work. But it MIGHT not go onto the 10t small cog. They are designed for 11+ teeth wheras the 6100 is designed for the 10t. I was running my 5100 mech with 8100 12sp shifter and 12sp Sunrace 11-51 (or 52 ??)cassette.

The 5100 and 6100 derailleurs are not identical. The 5100 weighs significantly more. Maybe just a heavier metal/plastic, I'm not sure. But they are different.


 
Posted : 07/03/2023 5:39 am
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I ran the other way round with zero problems

6100 mech with 11 shifter on 11-51t sunrace 11spd

so I don't see why not.


 
Posted : 07/03/2023 10:42 am

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