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...confirming that the electronic version is lighter than mechanical for the first time

Shimano have released the official weights for both the mechanical and electronic versions of their 2013 Dura-Ace groupset, each of which has had a major redesign, confirming that the electronic Di2 option is the lighter of the two for the first time.

Although the Di2 derailleurs are heavier than the mechanical alternatives, the dual control levers are 128g lighter giving the electronic system a 25g lower overall weight. Up until now, Di2 users have been at a slight weight disadvantage.

Dura-Ace will become an 11-speed system for 2013, the 9000 Series mechanical version, which we were lucky enough to try out in Belgium a few weeks ago, featuring much lighter shifting than previously.

The Dura-Ace Di2 system has been totally revamped for 2013, the 9070 series electronics coming into line with those of Shimano’s second tier Ultegra Di2 groupset.

Here are the weights in full:

 

DURA-ACE 9000


Chainset (FC-9000) 683g

Front & rear brake callipers (BR-9000) 297g

Cassette sprockets (CS-9000) 166g

Chain (CN-9000) 243g


Rear derailleur (RD-9000) 158g


Front derailleur (FD-9000) 66g


Left & right dual control levers (ST-9000) 365g

Total weight 1,978g

Total weight with cables 2,072g


DURA-ACE 9070 Di2


Chainset (FC-9000) 683g

Front & rear brake callipers (BR-9000) 297g

Cassette sprockets (CS-9000) 166g

Chain (CN-9000) 243
g

Rear derailleur (RD-9070) 217g

Front derailleur (FD-9070) 114g

Left & right dual control levers (ST-9070) 237g

Total weight 1,957g

Total weight with wiring and internal battery (SM-BTR2) 2,047g

Mat has worked for loads of bike magazines over the past 20 years, and been editor of 220 Triathlon and Cycling Plus. He's been road.cc technical editor for seven years, testing bikes, fettling the latest kit, and trying out the most up-to-the-minute clothing. We send him off around the world to get all the news from launches and shows too. He has won his category in Ironman UK 70.3 and finished on the podium in both marathons he has run. Mat is a youthful 45-year-old Cambridge graduate who did a post-grad in magazine journalism, and he is a past winner of the Cycling Media Award for Specialist Online Writer.

3 comments

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cat1commuter [1418 posts] 3 years ago
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I guess the Di2 is a little heavier with an external battery?

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HarveyMorcombe [42 posts] 3 years ago
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I do wonder how much these will cost  39

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Wookster [53 posts] 3 years ago
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Cost wise is this just a kidney, as opposed to the Super Record Eps being both kidneys a lung and half a liver!?!?!  4

Do like that chain set though!!