Like this site? Help us to make it better.


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

...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:



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

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 been in cycling media since 1996, on titles including BikeRadar, Total Bike, Total Mountain Bike, What Mountain Bike and Mountain Biking UK, and he has been editor of 220 Triathlon and Cycling Plus. Mat has been technical editor for over a decade, 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 Cambridge graduate who did a post-grad in magazine journalism, and he is a winner of the Cycling Media Award for Specialist Online Writer. Now over 50, he's riding road and gravel bikes most days for fun and fitness rather than training for competitions.

Add new comment


Wookster | 11 years ago

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!!

HarveyMorcombe | 11 years ago

I do wonder how much these will cost  39

cat1commuter | 11 years ago

I guess the Di2 is a little heavier with an external battery?

Latest Comments

  • mark1a 13 sec ago

    Almost certainly, reaction times won't have changed of course, but they were probably based on a Ford Anglia or similar with drum brakes &...

  • chrisonatrike 0 sec ago

    In NL the vast majority of places where lorries are allowed cycling isn't (much better alternatives are provided).  So Dutch lorry drivers might...

  • chrisonatrike 2 min 43 sec ago

    Actually, any cycle campaign should be first and foremost for the right of children to cycle.  This engages with the largest audience / is the most...

  • OnYerBike 8 min 8 sec ago

    If anyone is interested, according to the latest census 61.4% of households in Maida Vale have no access to cars/vans....

  • luk 13 min 16 sec ago

    some ebikes (with Fazua?) have USB output, so you could easily recharge this pump! that's sounds tempting.

  • henryb 1 hour 26 min ago

    I'd say it's fine to try and beat your mates up Box Hill when you all arrive at the bottom together, or to try and catch that wheel that you see 50...

  • HoarseMann 1 hour 40 min ago

    Many years ago, an uninsured, unlicenced driver in a vehicle with no MOT and registered as scrapped with the DVLA, ran into the back of my car....

  • boblo 2 hours 35 sec ago

    The reviewer says 'you can send texts'. Are these still the silly predefined ones from Garmin with no option to define your own from either the...

  • mattw 2 hours 21 min ago

    That seems distrubingly similar to the "try and deceive the police, try and deceive the Court, then deceive yourself to avoid having to take...

  • EraserBike 2 hours 37 min ago

    Clearly these scumbags are not buying motocross bikes through normal channels. They are stolen, just like this poor guy's bike. Police are...