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MTB rear mechs with 11-speed road shifters (Shimano)

secretsamsecretsam Posts: 5,039
Thinking of doing a big ride this summer, but will need lower gears. Current bike has 50/34 + 11/30, would like at least a 36 at the back. Currently I have a previous generation 11 speed 105 short cage mech; should I get a (say) 105 long cage plus Wolf Tooth or similar, or is there an MTB shifter that can do it? I seem to recall that Thorn bikes often came with an MTB rear shifter.


It's just a hill. Get over it.


  • whyamiherewhyamihere Posts: 7,678
    Assuming you're using STIs, I would use something like this:

    It converts the cable pull to what's needed to shift the MTB mech from a road shifter. The hanger extenders will make the shifting worse, which wouldn't be a problem with the MTB mech. Just be sure to get one which is compatible with front shifting too, there are some 1x only ones which have different cage geometry.
  • secretsamsecretsam Posts: 5,039
    OK cool, thanks

    It's just a hill. Get over it.
  • lesfirthlesfirth Posts: 1,381
    Hi Sam , I use a 50/34 with a 11/36 cassette (Sram) and a Ultegra R8000 GS rear mech. It works fine. No wolf tooth or , other bodges needed. 105 rear mech would also do the job. I do not know what the GS stands for but Shimano use it to indicate the longer cage option of the rear mech.
    I have been a grandad for quite a while .I live in a hilly area and I find that gearing low enough.
  • akhakh Posts: 206
    Lots of reports online of people running larger cassettes with a given derailleur than Shimano say will work. I agree with lesfirth that a medium cage road rear derailleur would probably work fine with a 36. I've managed to fit a 34 tooth cassette to a short cage, so you can probably get a 36 to work with a medium cage.

    All Shimano 11 speed road shifters are compatible with all 11 speed road/gravel rear derailleurs, so 105, Ultegra, or even GRX would work, with no need to the ShiftMate device linked above.
  • secretsamsecretsam Posts: 5,039
    Okay, so I could use a road mech? That would be easier

    It's just a hill. Get over it.
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