Do Ihave to lengthen my chain if

I put on a 55/44 instead of my current 53/39? I suspect so, just want to be sure so I dont go wasting time here…

thanks,

Weeman

Not necessarily. Check out http://www.parktool.com/repair_help/FAQchainlength.shtml and see if your chain falls within these parameters with the new chainrings installed. If not, time to go chain shopping. :wink:

What is your rear end like and what Rear Der are you running?

Isn’t that a bit of a personal question?