Originally Posted by
fauxto nick
How are the hills I was thinking of running a 12-21 on a 53/39, or should i bring my 12-26.
The hills are short and not steep. Run the 12/21 for the tighter spacing in the range of gears that you'll be using (12-17). Even if you end up in 53/19, you won't be crossing up enough to be a problem.