SS or GS derailleur?

Moonbiker
Moonbiker Posts: 1,706
edited November 2016 in Workshop
Hi on a second hand bike how do you tell what you have fitted?


Its a 105 model, bike is 10 speed. 5700 i think



Do GS ones have alot longer cage than SS so you could measure it, to determine, or is there a part number somewhere, I can't find one...

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