B b0b New member Dec 31, 2010 #1 Roberts Cycles in Croydon (S London) offer these (for wide enough frames) so much neater than derailleurs and can't be the much heavier than all the normal cogs etc. Wondered about reliability, longevity, ease of use and so on.
Roberts Cycles in Croydon (S London) offer these (for wide enough frames) so much neater than derailleurs and can't be the much heavier than all the normal cogs etc. Wondered about reliability, longevity, ease of use and so on.
