I am looking at using a road rear derailleur like a 105 or Ultegra on my commuter bike. But most of the literature says they can only handle a 27t cassette. I thoink a lot of the cyclocross guys use road drive trains with MTB cassettes.Does anyone know if they will work a 30t cassette? What will happen with this combination?
Mtbr's 2016 Winter Biking GearReviews and Roundups
Results 1 to 3 of 3