Shimano 8050/9150 Di2 Compatibility

[RobJ]

I've done quite a bit of searching on Shimano and elsewhere and can't seem to find the answer. Are the DA 9150 Di2 levers compatible with the Ultegra 8050 Di2 RD? Thanks.

[Dave Wages]

Yes, I have 9170 shifters setup with an 8050 RD, works fine.

[echappist]

As answered above, it’s compatible

When in doubt consult the etube compatibility chart (link to latest version may be found on Carlton Bale’s website on Di2)

http://e-tubeproject.shimano.com/pdf/en/HM-CC.3.2.2-00-EN.pdf

[BdaGhisallo]

Everything DI2 on the road side that is 11sp is cross compatible. 6870, 8050, 9070 & 9150 can all be mixed and matched.

[Look585]

Everything DI2 on the road side that is 11sp is cross compatible. 6870, 8050, 9070 & 9150 can all be mixed and matched.

Compatibility goes even further for some shifter switches. I have a pair of "10s" 6770 shifters actuating a 6870 FD / 8050 RD setup. Also was able to get a 10s SW-R600 (climbing shifter) to operate the 6870F/8050R.

[RobJ]

Thanks everyone! I knew the older stuff compatibility but just wasn't sure when they updated everything recently.

[BdaGhisallo]

Compatibility goes even further for some shifter switches. I have a pair of "10s" 6770 shifters actuating a 6870 FD / 8050 RD setup. Also was able to get a 10s SW-R600 (climbing shifter) to operate the 6870F/8050R.

I thought Shimano had shut that door - that of 10sp DI2 mixing with 11sp? Have you done a firmware update since you hooked up the 6770 shifters to the derr's? If you haven't I would be reticent. You might find that your setup will no longer work.

[echappist]

Go to the link i posted. 6770 works with any 11-speed. Conversely, any 11-speed shifter works with a set of 6770 derailleurs
The shifters merely send a signal to shift up or down.

[loxx0050]

I thought Shimano shut the door on mixing 10 and 11 speed derailleurs. So no running a 6770 front with a 6870 rear anymore for an economical way to upgrade to 11 speed back when that was first released. Correct me if I'm wrong but that's what I recall.

Edit - didn't realize somebody also posted the same thing. Morning coffee still hasn't kicked in.

[Look585]

I thought Shimano shut the door on mixing 10 and 11 speed derailleurs. So no running a 6770 front with a 6870 rear anymore for an economical way to upgrade to 11 speed back when that was first released. Correct me if I'm wrong but that's what I recall.

You can still mix 6770f and 6870r mechs if you have the right firmware (2.5.2, IRRC) and access to a PCE1 diagnostic tool. It is a bit complicated, but 6870r mechs are cheap right now and are definitely a viable way to upgrade an otherwise 10s Di2 kit to 11s.

[BdaGhisallo]

You can still mix 6770f and 6870r mechs if you have the right firmware (2.5.2, IRRC) and access to a PCE1 diagnostic tool. It is a bit complicated, but 6870r mechs are cheap right now and are definitely a viable way to upgrade an otherwise 10s Di2 kit to 11s.

I recall it not being as simple as it used to be. Shimano definitely shut down that easy 10sp -> 11sp upgrade avenue. Gotta protect their revenues.

[echappist]

I recall it not being as simple as it used to be. Shimano definitely shut down that easy 10sp -> 11sp upgrade avenue. Gotta protect their revenues.

Personally im surprised that they are magnanamous enough to allow 6870/9070 derailleurs to be paired with 8050/9150 derailleurs

[Look585]

I recall it not being as simple as it used to be. Shimano definitely shut down that easy 10sp -> 11sp upgrade avenue. Gotta protect their revenues.

Once you have the PCE1 tool and the right firmware file, it is a pretty straightforward job. Not simple, but not rocket surgery either.

If you dropped off box of 10s 6770 parts and a new 6870r mech, it would take about 30 minutes to have everything talking the same language.

[BdaGhisallo]

Personally im surprised that they are magnanamous enough to allow 6870/9070 derailleurs to be paired with 8050/9150 derailleurs

They'll surely get around to blocking that too.