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Shimano 105 10-Speed Cassette

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  • December 28, 2014 at 1:20 am #22914
    SirCav

    I’m looking to change the 12-25t cassette (Shimano 105/10spd) for a 11-28 cassette. Can anyone tell me if I will need to change the rear mech as well? I have a compact (50/34) chainring. Thanks.

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Viewing 7 replies - 1 through 7 (of 7 total)
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  • December 30, 2014 at 10:18 am #824339
    0
    SirCav

    Thank you. v helpful.
    Thank you. v helpful.

    December 30, 2014 at 9:49 am #824337
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    SPIKE718

    I changed my Ultegra 6770
    I changed my Ultegra 6770 from 11-28 to 12-30 yesterday. No adjustments. Works very well indeed.

    December 28, 2014 at 5:52 pm #824335
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    SirCav

    Thanks all. Very helpful and
    Thanks all. Very helpful and much appreciated.

    December 28, 2014 at 5:17 pm #824333
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    LondonDynaslow

    You won’t. You may need to
    You won’t. You may need to tighten the B-tension screw but probably not (mine is fully out with a 28t but screwed in a bit with 30t).

    December 28, 2014 at 4:06 pm #824331
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    shmooster

    Even the original 5700SS
    Even the original 5700SS derailler should be fine with a 28T cassette. If you go to 30T you’ll need a 5701SS or a GS, and if you go to 32T you’ll need a GS

    December 28, 2014 at 9:11 am #824329
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    CXR94Di2

    I have a 32T on my rear cass.
    I have a 32T on my rear cass. I only use it as my bale out gear when I am completely done in. It allows me to maintain a decent spin rate whilst hiding the fact I am knackered 🙂

    December 28, 2014 at 8:31 am #824327
    0
    Ali Gibb

    I changed my 11-25 to a 12-30
    I changed my 11-25 to a 12-30 on compact 105 and its fine. Took a fair amount of fiddling and it really should have had a longer arm but I make sure I never use 30 when in the 34 cog, which isn’t a problem.

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