Thread: Do I need a derailleur extension?
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Old 09-13-19 | 08:34 AM
  #3  
alij2018
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Joined: Jul 2018
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Originally Posted by subgrade
According to Shimano specs that derailleur is 42T compatible.
https://bike.shimano.com/en-EU/produ...-M6000-GS.html

Edit: upon closer inspection it looks that what you have is in fact the SGS version which is rated only for 36T. Then yes, you need a derailleur extension for it to work with 42t casette.
https://bike.shimano.com/en-EU/produ...M6000-SGS.html
Hi, no it is GS. According to where I bought it.
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