I have a road bike w/ S105 Double components (12-25)....I'm considering switching to an XT Cassette/Rear Derailleur (11-34) since I have bad knees and would like to tackle more hills. In any case I see there are 3 different XT rear derailleurs......which one is the one for me? Thanks for you help!
I have a road bike w/ S105 Double components (12-25)....I'm considering switching to an XT Cassette/Rear Derailleur (11-34) since I have bad knees and would like to tackle more hills. In any case I see there are 3 different XT rear derailleurs......which one is the one for me? Thanks for you help!
Shimano XT RD-M760-GS Mid-Cage Rear Derailleur
Shimano XT RD-M760-SGS Long-Cage Rear Derailleur
Shimano Deore XT Rear Derailleur
The difference is wrap capacity. Assuming a 53/39 front chainset and 11x34 rear, you need to wrap 37 teeth. Make sure the chain is long enough.