Topic starter
What mech for my 30 speed Trek cassette 11/34,don't know the difference.
Posted : 06/07/2014 5:19 pm
3 rings on front usually means long cage
2 rings = med cage
1 ring = short cage
But I use a med cage on 1 front ring due to larger ratio cassette 11-40
Posted : 06/07/2014 5:32 pm