Yes, but you’d also need battery, junction box, charger & wiires

If anything AXS is slower than Di2, both are better than cable though and will continue to be without maintenance.  If that’s worth £900 to you, only you can answer.  FWIW I no longer own bikes with cables.

Riding to work on my trusty Tripster

Yes, you can and I have done it with my v1 Tripster.

It’s currently running grx shifters, old Dura-ace front mech, r8000 ultegra rear mech and a grx 2x crank.

You can’t mix and match MTB and road/gravel di2 and the new 12 speed stuff isn’t backwards compatible.

The only problem I had was finding somewhere for the battery as the V1 doesn’t have internal routing. In the end I found a di2 stem and put the battery in the head tube.

I’d also recommend the MTB display, makes life easier for charging/firmware etc.

I’ll be selling my Ultegra Di2 in the new year if your interested? However I find the Mechanical Ultegra just as slick on my winter bike.

Perhaps you just need a new inner & outer cable?

Good info, cheers slackboy. Yep, mine’s a v1 too :)

You can get a external junction box that goes under the bottom bracket. Sounds like it’s fragile, but ive never had problem. I’ve got a single di2 cable running from the head tube to bottom bracket and the mechs plug into that. If you look at the Tripster thread, I put some photos in when I did it originally.

Merlin will do you a di2 brake set for £300 , flat mount but you could swap your existing calipers , which is what I did . (, although I bought a cotic carbon fork too, which was flat mount.

https://www.merlincycles.com/shimano-grx815-di2-front-or-rear-disc-brake-283457.html

Change your cables to SP41 optislick.

Just done 4 days on the KAW is sticky wet chalk and mud and my 10 year old 10 speed 105 on the CX bike has been perfect. Fast changes.

Zero mechanicals despite carrying camping gear on 24 spoke rear wheels.