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Shimano Chain-ring compatibility?

simonaspinallsimonaspinall Posts: 645
edited January 2010 in Workshop
Is it the case that all Shimano chain-ring sizes can fit on all regular double crank chainsets?

I am running 53-39 but would like to upgrade to a 55-42 for monster speed and my road bike doubling as a TT bike. These rings may be of a different level such as Ultegra or Dura-ace...would that make any difference or is Shimano compatible across the range with all fittings but the materials and construction the difference?

If I bought these chain-rings seperately would they fit a a standard shimano 105 crank arm? Or if I just got one of the chain rings they would fit with the other existing ring? E.g. 39-55.

Would the derailleur be ok for that sort of size?

What wheels...?!


  • whyamiherewhyamihere Posts: 7,681
    They'll fit, no problem. Even going 39/55 will be fine, as the 16 tooth gap is just the same as the gap on compacts. Don't forget you'll need to make te chain longer.

    The chainrings are supposed to be matched to provide faster shifting. In reality, I doubt you'd notice.
  • Nice one, cheers mate
    What wheels...?!
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