Earlier this week we brought you all the weights for the mechanical XTR M9000 components, and, as promised, here’s the Di2 M9070 bits on the scale.
Starting at the front, the shifter is about 63g (we’ll round up, but the decimals are on the scale). Only one shifter was weighed since they’re basically just mirror images of each other. That, and Fair Wheel Bikes was setting up a bike with sequential shifting, which only requires one shifter. So double the weight if you’re running a double.
The display comes in at 30g even.
You can use the standard external e-Tube Di2 battery if you’d like, but the seatpost battery makes for a sleeker bike if you can do without a dropper post. Or, you can mount their cylindrical BTR2 battery on the water bottle cage mount along your seat- or downtube. Assuming you pick the internal, you’re looking at about 51g.
The front derailleur is 128g.
It’s worth mentioning that most of what you’ll find written online (here and elsewhere) is calling out the entire XTR Di2 collection as a 9070 part number. Shimano, however, lists most of the items as M9050 except for the double-specific front derailleur, which gets the FD-M9070 moniker. All others are 9050 or something else (like BTR2 for the battery, etc.) if they’re likely to be compatible with other current or future products. As Jason from Fair Wheel Bikes put it:
“9070 is the double di2 front derailleur. Triple front Di2 is 9050. Most other pieces are 9050. Cranks and brakes are 9000 (race) and 9020 (trail). Cassette and chain are still 9000.”
The rear derailleur comes in just under 290g. Our Ultrega Di2 e-Tube wiring kit comes in at about 41g without the control box, so figure somewhere between 30 and 40g here, too, depending on setup.
Check out hands on photos and our ride review here, and the full technical breakdown of the drivetrain here, XTR Di2 parts here and brakes here. The rest of the component weights are here. Huge thanks to Jason at Fair Wheel Bikes for the assist!