Convert to DuraAce Di2

[WelshNinja]

Hi guys, this may seem like an odd question to you but here it goes.

What components are needed to change from Ultegra Di2 to DuraAce Di2, both 11 speed?

I know a lot of you will say there is no point, no gain, its expensive, blah blah, but its just something I'm considering for my own reasons.

Thanks in advance

[Ross]

Derailleurs and shifters

[danny the boy]

Probably need to divulge whatever these reasons are, if its just for gear changes I would start with a chain and cassette and see if you still think its a good idea. Don't see a heap of advantage in changing the rest. Brakes? Bottom Bracket?

[cage]

Derailleurs and shifters

Just out of interest, wouldn't the DA derailleurs work with the Ultegra shifters or vice versa?

[Cmm]

All 11 speed is interchangeable ultegra shifters with da derailleurs, da shifters with ult derailleurs all da with ult rd (sky ran this set up for some stage of grand tours this year for a 32 rear cog)

[Xplora]

Probably need to divulge whatever these reasons are,

Hates $$$$

[jasonc]

most of the weight advantage is in the crank. so just change the crank and be done with it

[brett.hooker]

All 11 speed is interchangeable ultegra shifters with da derailleurs, da shifters with ult derailleurs all da with ult rd (sky ran this set up for some stage of grand tours this year for a 32 rear cog)

As crm has said. All interchangeable. Pick and choose as you want. My bike runs da fd and ultegra rd so I can run 11-32 on the rear cassette...

[WelshNinja]

Thanks folks.
I see a lot of different numbers ie 6700,6800 for example, that are mentioned when people talk about this stuff. I'm guessing it makes no difference as long as it's 11spd?
(Though if someone would like to explain the differences I'd be interested to hear)
My reasons for this is maybe not the most logical but hey. I've put my bike through a tough few weeks and thought I'd replace a few things. But why replace with the same? Why not upgrade? But then I'd have mix and match so I'd have to go all the way.
Like I said not logical or cost efficient. Just put it down to being quirky. Maybe.

[Xplora]

If parts are shagged or you just don't want the old crap on the bike after a hard life, fair enough if you have the disposable income. I have to buy a kitchen reno and electrical reno before I can do a decent upgrade. Moving to the campy cult makes the group decision much easier tho with multi change and trim adjustment within the humble chorus. If you were talking 6770 vs 9000 it's much harder to justify saving cash.

[Duck!]

Thanks folks.
I see a lot of different numbers ie 6700,6800 for example, that are mentioned when people talk about this stuff. I'm guessing it makes no difference as long as it's 11spd?

Numbers such as 6800, 6700 etc are purely identification codes for different generations of componentry. 6-series indicates Ultegra (or 600 for older ranges), the second digit is the one that defines the vintage, so to speak, while the third & fourth digits identify variants & evolutions within the series. 6800/6870 (xx70 identifies electronic gear) is the current 11-sp. series, 6700/6770 & 6600 are 10-sp, 6500 (going back a while now) was 9-sp.

Shimano to date have only produced three 11-sp groupsets, 9000 Dura-Ace, 6800 Ultegra & the recently-released 5800 105. All components within these groups are cross-compatible, but there's limited compatibility with older groups.

[WelshNinja]

Great stuff Duck, thanks.
The only financial saving grace to doing this is hopefully I could sell my leftover ultegra parts to ease the hit to the wallet. Thanks guys

[jacks1071]

Thanks folks.
I see a lot of different numbers ie 6700,6800 for example, that are mentioned when people talk about this stuff. I'm guessing it makes no difference as long as it's 11spd?
(Though if someone would like to explain the differences I'd be interested to hear)
My reasons for this is maybe not the most logical but hey. I've put my bike through a tough few weeks and thought I'd replace a few things. But why replace with the same? Why not upgrade? But then I'd have mix and match so I'd have to go all the way.
Like I said not logical or cost efficient. Just put it down to being quirky. Maybe.

The only 11sp specific parts are the levers and derailleurs. You can run older 10sp version brakes & cranks if you like with the newer shifting parts.

[Duck!]

In the case of Di2 bits, only derailleurs are 11-sp. specific. 6770 & RS785 hydro brake shifters will work with both 10 & 11-sp, because unlike mechanical systems, the shift distance is programmed into the derailleur rather than the shifter.