If I have a tiagra compact 9 speed chainset with a 34/50 how easy is it to get a 46t ring so that it's more suitable for cross racing. I assume the mech and everything else will be fine with a little adjustment.
Can't tell with rings if they have the right pcd,speed,ramps and pins? Also they seem to be ridiculously expensive £40 or more.
Anyone done it and able to convince me it's cheap and easy?
