than on second thought....... we all are suckers for punishment. If Pro's walk up this hill, think about the "HIGH" when you get to the top without walking. Seeing that this look like a killer I suggest this. Dont spend money on a 25 back chainring, but rather change your clip-on pedals for the "1960's" pedals and leave your Time-Pro's at home and use the old addidas tekkies. The advantages is unlimited (a) You'll walk faster ;D;D;D(b) When the other roadies pass you, they'll feel sorry for this "beginner-poor guy" ;D ;D ;D (c) Dont make remarks when they pass ;D ;D ;D