Originally Posted by
bradtx
Geostef, It'd help if you let us know what the number of teeth on the chainrings and the largest and smallest on the rear.
This is important. We need to know what you're starting with to suggest the best modification. For example, say you have a 53/39 crank and 11-23 cassette. In that case I'd suggest a cassette with a 28T low gear. See how you like that. If that's not enough, there are more options after that.