Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.Marlin
08-06-10, 01:27 PM
Excuse me if this has been answered before, but I have searched and not found an answer. Can I replace an Ultegra 6603 chainring with a 6703? Specifically, the 39 tooth middle ring, but in general, any of the rings. I don't see any reason not to, but am I overlooking something? Thanks