Shimano release 2013 Dura-Ace Di2 and Dura Ace 9000 Series details...

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