Originally Posted by
hamster
Shimano definitely supports front difference up to 16T (duh... 50/34?) I'm not sure what would happen if you tried to stretch this by one or two teeth, but I don't see why it would cause any problems.
This is why I no longer trust myself to pull numbers straight out of my head. Too many numbers and too small a brain...I do not, however, have any problem pulling them from an orafice of my fundement.
If more than 16T shifting will suffer and the odds of dropping a chain go up.