New cassette for Alr 5

jacksoneaker
jacksoneaker Posts: 60
edited August 2016 in Workshop
I am thinking of upgrading my 11-28 tooth 11spd 105 cassette to a 11-32 tooth cassette for better climbing. I have recently learned that I can have either a ss or gs derailer and that only the gs model can use a 32 tooth cassette. It is an 11 spd 105 derailer and treks website doesn't specify which model it is. I would prefer not to have to change derailers when I upgrade.

Is there anyway to tell what derailer I have? I want to know if it will support the climbing cassette.

Thanks!

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