Can I use a 10 spee...
 

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[Closed] Can I use a 10 speed rear mech with an 11 speed shifter and cassette?

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Posts: 579
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I’m considering my options in the current ‘not everything is available’ market. I’m assuming there’s an issue with pull ratio using the 10 speed mech?


 
Posted : 26/02/2022 2:59 pm
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With Shimano you can, provided the mech has the capacity for your chosen cassette range I believe 10 and 11 speed mechs are interchangeable.


 
Posted : 26/02/2022 3:24 pm
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Yep, just built my Iroko with 11speed and used a 10 speed mech off another bike - Works perfectly, Range is 11-46, I had 10 speed 11-48 cassette and the mech wouldn’t clear the 48t sprocket.


 
Posted : 26/02/2022 3:30 pm
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Which mech/shifter/cassette are you actually considering? There are enough different flavours or 10 and 11 speed parts that it's not as simple....


 
Posted : 26/02/2022 4:51 pm
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I’ve got a 10 speed xtr mech using a sunrace mech hanger extender thing, currently 10 speed 11-46t cassette. Seems plenty of b-screw potential for a bigger cassette. Was thinking of using an 11 speed slx shifter and sunrace 11 speed 11-50t cassette. Mainly because I can’t find one of the sunrace 11-50 10 speed cassettes anywhere…


 
Posted : 26/02/2022 5:22 pm
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Road or mtb

I think mtb it’s no

Road is yes provided it’s a Tiara 4700 mech or grx 10 speed mech

Do not say old 105 when that was 10 speed


 
Posted : 26/02/2022 7:00 pm
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Mainly because I can’t find one of the sunrace 11-50 10 speed cassettes anywhere…

Got a 11-48, if you're interested, never used (not Sunrace, but similar) 🙂

I think mtb it’s no

Well, it's Yes. See above.
Just checked 11-46 11spd XT cassette, M7000-11 SLX shifter, M-786 XT mech and 11 spd chain.


 
Posted : 26/02/2022 8:27 pm
 Aidy
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According to http://blog.artscyclery.com/science-behind-the-magic/science-behind-the-magic-drivetrain-compatibility/ the derailleur ratio is 1.2 vs 1.1, so it's probably close enough to work.


 
Posted : 26/02/2022 8:49 pm

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