C cp128 New member Oct 29, 2009 #1 is it easy to convert my mountain bike from 18 speed to 21 speed what will i need & whats the cheapest place to go i got new wheels that can take a 7 cog cassette
is it easy to convert my mountain bike from 18 speed to 21 speed what will i need & whats the cheapest place to go i got new wheels that can take a 7 cog cassette
