So far, we’ve posted actual weights for the complete 2013 Shimano Dura-Ace 9000 mechanical group and, thanks to our friends at Race Pace Bicycles, the weights of the new Di2 internal seatpost battery.
But, that bike came fully built, so we didn’t have individual component weights for the Di2 bits. Now we do, courtesy of Emiliano at Fair Wheel Bikes. They’re saying everything’s coming in under Shimano’s official claimed weights, too!
The Di2 9070 rear derailleur comes in at 213.4g, versus 160g for mechanical. Click through for the rest…
Front derailleur is 106.5g, versus 60g for mech. So far, we’re +100g.
The Di2 shifter/levers come in at just 230g for the pair. That’s 135g lighter than the mechanical version’s 365g, more than making up for the derailleurs. Of course, you’ll still have the battery, but the wires are lighter than the cables and housing.