52D chainring to 53 chainring
I have an Ultegra crankset. It's 6604 triple ice grey with a 52t-D chainring.
http://techdocs.shimano.com/media/te...9830621037.pdf
Does anyone know if that is compatible with a 53B? I can't seem to find a 53D on their website or at least I couldn't find it.