Originally Posted by
icemilkcoffee
Did you actually weigh the components to come up with this? I kind of doubt there is that much difference in weight. The 105 1055 and the RX100 A550 groups look really, really similar aside from finish.
there are lots of sources for this data and Tmar is pretty much the expert. with shimano there is always some differences for groups in the same time, often weight.
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