Shimano I-Spec B

Home Forum Bike Forum Shimano I-Spec B

Viewing 7 posts - 1 through 7 (of 7 total)
  • Shimano I-Spec B
  • Premier Icon fathomer

    Anyone know if the newer, I assume 2013, I-Spec B brakes and shifters are compatible with the original I-Spec.

    I’m looking at breaks for my new build to go with an original I-Spec shifter I’ve got and really don’t want something that won’t go together.

    Apologies if this has already been covered but I couldn’t find anything.

    Premier Icon Teapot

    In a word, no. I-spec B type brakes have to be used with B type shifters.

    They aren’t cross compatible.

    Premier Icon fathomer

    That’s just daft, why introduce a new mounting system and then a year(ish) later change it?

    Premier Icon jairaj

    yep agreed that’s rubbish. Can you at least get a new type I spec bracket to “upgrade” your shifters?


    The new I-spec ‘B’ shifters/adapters are backwards compatible to the old levers (with a special bolt included with them), but the old I-spec shifters/adapters are not forward compatible to the new levers.

    So, these combinations will work:-
    Old levers with old shifters
    New levers with new shifters
    Old levers with new shifters

    This combination won’t work:-
    New levers with old shifters

    Confused yet? Nice one Shimano 🙄


    Very informative perthmtb, thanks 🙂

    Premier Icon fathomer

    Thanks perthmtb, guess I better buy older brakes then 🙄

Viewing 7 posts - 1 through 7 (of 7 total)

The topic ‘Shimano I-Spec B’ is closed to new replies.