13-speed Shimano Dura-Ace R9350 Di2: everything we know so far

13-speed Dura-Ace is coming - the R9350 groupset has been spotted at the Vuelta, Tour of Luxembourg and even the cycling world championships 2026 in Montreal.

Nothing on this page comes from official Shimano releases or announcements, it simply lists information found through race sightings, FCC documents, retailer listings and more.

How to read this page

Official Information straight from Shimano.
Seen in leaks Leaked documents, race photos. Not confirmed by Shimano.
Speculation Educated guesses and speculation.
Unknown No reliable information yet.

Dura-Ace R9300 at a glance

A full description is further down the page, but here's a quick overview of everything we know so far.

It's still semi-wireless

With 1x12-speed Di2 MTB and Gravel sporting full wireless rear derailleurs, most people assumed the same would be true for Shimano's new road groupsets. However, photos taken at the Vuelta, Tour of Luxembourg, and the UCI World Championship 2026 clearly showed wires connecting the rear derailleur and front derailleur to the main battery.

A battery was not visible, so we know the current version of 13-speed Di2 does not use derailleur mounted batteries. At least not in its 2x-configuration.

Speculation There's some speculation online about a possible 1x version of RD-R9350, with derailleur mounted battery. This is just speculation for now, but worth mentioning.

To summarize, a 13-speed Dura-Ace build is most likely very similar to a 12-speed build:

• One central battery in the frame - likely BT-DN300
• Shifters communicate wirelressly through the rear derailleur
• Both derailleurs are connected by EW-SD300 wire

It's being tested in races right now

The R9300 groupset first appeared at La Vuelta, August 2026. Lindsay De Vylder from Alpecin - Premier Tech rode a thirteen-speed bike a couple of stages, and things quieted down a bit after that.

Testing must've gone well, because a month later Mathieu van der Poel used that very same groupset at the Tour of Luxembourg 2026. He used a different crankset than the one we saw before, but the new shift levers were clearly visible.

Photos of the Dutch team in Montréal suggest that he's using the same shifters at the UCI World Championships 2026, so I suspect we'll see the groupset in the wild more often from now on.

13-Speed components

Shift levers - ST-R9370

While Shimano model codes are relatively easy to predict, the real confirmation of the name ST-R9370 came when ooo posted FCC-like photos on the WeightWeenies forums.

The photos show the ST-R9370 internals, with the model code 'ST-R9370' printed on them.

In the image above, the regular paddle shift buttons can be seen, as well as the model code. The more interesting thing is in the upper section of the unit however, where the new thumb button is.

This section shows two 'buttons', indicating that the new thumb button can be moved up and down, and that both directions can be programmed. Speculation

The identification code for the shifters is WY7-0WE1 (0WEY).

Rear Derailleur - RD-R9350 (WY7-3L41)

Along with the shifters, ooo also posted images of the rear derailleur internals. Let's take a look:

The SD300 port is there, and that matches what we've seen at races - this specific rear derailleur is wired to the rest of the system.

Now.. I certainly won't rule out a battery attachment for the rear derailleur yet. It's not unthinkable that Shimano is working on a 1x-version of the rear derailleur that can be powered using the BT-DN320 battery. If so, that battery could be connected to the rear derailleur using the regular SD300 port, like Shimano does with its 1x12 MTB / Gravel rear derailleurs:

Speaking of batteries, the RD-R9350 internal photos show a different charge port than on current 12-speed Di2. Instead of 4 contacts in a straight line, the new charging terminal uses a square contact pattern - just like the BT-DN320 battery and its EC-DN100 charger.

It therefore seems inevitable that you'll need a new charger for 13-speed Dura-Ace. The 12-speed EW-EC300 charger simply won't fit.

Front Derailleur - FD-R9350

Not much is known about the new front derailleur, to be honest.

We know it exists, and it looks similar to the current FD-R9250. Sure, there are some subtle differences and weight savings, but it looks very similar. It's wired, it's 2x... and that's about all we know.

Power Meter Crankset - FC-R9300 (WY7-3MM1)

Looking at the image from the Vuelta above, we can see the FC-R9300-P power meter crankset. There's a button and an LED, just like on current Shimano power meter cranksets.

The leaked FCC certification photos suggest that this is a direct mount crankset.

Why the change? Is it just a case of Shimano getting with the times, or is there more to it?

One of the reason I can think of: Shimano's track record when it comes to power meters. As proven multiple times by GPLama and DCRainmaker, the 11-speed and 12-speed power meter accuracy isn't great.

Let's hope Shimano get it right this time around!

Release date? Not this year

While not much is known about a possible release date, all signs point to 2027. Personally, I suspect the groupset will be announced summer 2027, with a certain off-road announcement earlier that year.

Shimano won't comment on products that may or may not be in development or testing, so this is all speculation for now.

I'll update this page as we find out more, so check back every now and then. The last updated notice at the top will tell you when the page was last updated :).