Originally Posted by djtrackie
is it possible to get a 11/26 or 27 cassette? I currently have a 12/26
I want to be bigger than the other dude's 52/12
yes.
of the same make:
buy a 11-23.
buy a 12-27.
remove the 12 and put the 11 on and use the lock ring that came with the 11. note: you will have no 12. you will get a 11,13 jump.
or you can just order an 11 tooth cog and lock ring from here
http://sheldonbrown.com/harris/k7.html#sprockets. If you call they will also help you do it step by step.