Di2: Ultegra ST-6770 and 11 speed 1x setup
03-18-23, 07:55 PM
#1
Senior Member
Thread Starter
Join Date: Apr 2016
Location: Ontario
Posts: 558
Bikes: HP Velotechnik Streetmachine GTE, 2015 Devinci Silverstone SL4, 2012 Cannondale Road Tandem 2, Circe Morpheus, 2021 Rose Backroad, 2017 Devinci Hatchet
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quoted: 181 Post(s)
Liked 14 Times
in
12 Posts
Di2: Ultegra ST-6770 and 11 speed 1x setup
Hi!
The Ultegra ST-6770 di2 STI is originally from the 10 speed ultegra groupset. There are reports on the internet that a firmware update in 2014 made it a requirement that both front *and* rear derailleur must be from a 10 speed groupset, or a 11 speed groupset to work with the ST-6770 (but not mixed).
I am contemplating using a ST-6770 with an 11 speed rear derailleur (the RD-RX815 would be a good match for my use), but in a 1x configuration. Does anyone know if the ST-6770 will work with just one 11 speed DI2 derailleur and up-to-date firmware?
Thanks!
The Ultegra ST-6770 di2 STI is originally from the 10 speed ultegra groupset. There are reports on the internet that a firmware update in 2014 made it a requirement that both front *and* rear derailleur must be from a 10 speed groupset, or a 11 speed groupset to work with the ST-6770 (but not mixed).
I am contemplating using a ST-6770 with an 11 speed rear derailleur (the RD-RX815 would be a good match for my use), but in a 1x configuration. Does anyone know if the ST-6770 will work with just one 11 speed DI2 derailleur and up-to-date firmware?
Thanks!
03-19-23, 06:55 AM
#2
Di2 fanatic
Join Date: Aug 2019
Location: The Netherlands
Posts: 137
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 51 Post(s)
Liked 58 Times
in
37 Posts
Yes, all road/mtb 10-speed and 11-speed Di2 shifters (except 7970) can be used with any 11-speed / 10-speed derailleur, no problem.
(Pages 2/4: https://bike.shimano.com/content/dam....1.2-00-EN.pdf)
(Pages 2/4: https://bike.shimano.com/content/dam....1.2-00-EN.pdf)
