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  • iddle ring compatability
  • Premier Icon andypaul99
    Free Member

    Been offered a cheapish Shimano XT middle ring, but will it fit on my Deore FC-M542 cranks?

    Premier Icon PaulD
    Free Member

    Shimano Technical do list FC-M542 cranks under the non-series components.

    The ring will ‘fit’ as it is the same BCD and is Hollowtech-II, but…

    If you have the alloy XT middle, it should fit perfectly and properly on the step on the crankarm.

    If you have the composite XT middle, it would require fettling.
    I would not attempt this as it may weaken the ring.

    So, in summary, you may get it to fit, but could have a potential problem on your bike.

    I would not want to ride it with the composite ring.


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