Short cage or medium cage

fat_tail
fat_tail Posts: 786
edited March 2014 in The workshop
Hi - looking for some advice.

I am thinking of replacing the Tiagra rear derailleur with an Ultegra 10 speed unit. Wondering whether I need the GS or SS. Looks like I will need a capacity of 33 (16 at front and 17 at the rear).

Any help or advice welcome.

Cheers
Ridley Fenix SL

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