Originally Posted by
Luis G.
13-26/28 cassette would not be great for climbing.
You need something with an minimum 11-34 cassette. Sometimes upwards to 36/38 depending on your area.
Also this depends on if you are going 1 ring in the front, if so you may need to talk to your LBS as you will need something more monstrous.
My mistake , thanks for correcting me.
Btw i was thinking on 1ring in the front and for the cassette the most large.