im runnin a 07 sirrus. the bike came with these....
FRONT DERAILLEUR - Shimano T301, 31.8 clamp, bottom pull
REAR DERAILLEUR - Shimano Sora, long cage
I rode my brothers Cannondale, his came with Tiagra derailleurs, I could tell a difference as soon as I shifted.... which of these do I want to get???
ALSO, my bike is an 8 speed.. was looking at these for the front - tiagra front - 105 front or ultegra front
AND these for the back... tiagra - 105 - ultegra .... Do I need short or long cage?
my current cassette is a shimano hg50 8 speed.
Will my current shifters work wit these?? Shimano EF-50, EZ Fire