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  • Thanks a lot for your response, I can take a photo of the chainrings and, if allowed, I will add it to the original post. My bike has currently the Shimano M442 Octalink (44/32/22) chainrings, I have searched online and could not find this exact same model in the stores. Do you have nay suggestion on which moder chainrings I could buy that would work well in my bike? Commented Nov 23, 2024 at 4:59
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    @spanito Octalink is the BB model the crankset uses and is not important. You do not want to replace the whole crankset, that is expensive. And if yes, you would not need the same model. Here you have a diagram with part numbers si.shimano.com/en/pdfs/ev/FC-M442-2527/EV-FC-M442-2527.pdf The bolt diameters (BCD) you need to follow are 104 and 64 mm. Commented Nov 23, 2024 at 8:03
  • Thanks for the helpful information. I have now ordered the following chain rings. I think they should fit my crankset: rosebikes.se/… , rosebikes.se/… , rosebikes.se/shimano-deore-fc-m590t4060mt300-chainring-415858 Commented Nov 23, 2024 at 12:14
  • Chainrings are now replaced and the chain no longer skips. Thanks a lot for helping me solving the issue. Commented Dec 1, 2024 at 9:25
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    @spanito you're welcome. Would you mark this answer as accepted so that the question won't keep popping up on the front page? Commented Dec 1, 2024 at 17:43