hello
I have a 2017 giant TCR advanced 2, it's bone stock with 105 components and I was wondering how do find out which Derailleur I have. I'm interested in possibly changing out my cassette for an 11-32 for a trip to the mountains next spring. stock is an 11-28 I found this https://www.westernbikeworks.com/pro...ear-derailleur, which says I can run standard or up to 11-32. so I can swap out my cassettes when needed. but it got me thinking that I really don't even know what my stock cassette can accommodate. after inquiring at my lbs they just recommended that I just get stronger and save the money.
any advice?
thanks
robert