thedudesky Posted April 14, 2014 Share I want to replace my entire drive chain on my MTB. I have been looking at various chain rings on the net for prices. My current setup is a Shimano FC-M552 with 42A x 32A x 24 T chain rings. Will I have to replace them with M552 chain rings or can I fit M660 chain rings? Also is there a difference between a 42A chain ring and a 42T chain ring? Link to comment Share on other sites More sharing options...
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