I'm running 50/34 and 11-34 with v3 ER9 - no issues from that setup though it took a good bit of fine tuning (though I don't think that related to the ratios).

Saw this https://www.reddit.com/r/Zwift/comments/1lajf6w/space_saving_front_wheel_replacement_on_the/

Quote from: clubber on January 29, 2026, 05:17:25 PM
Just got my ER9 groupset - on initial look, it seems great especially for the money - I've been using GRT 12 on my gravel bike and am very happy with that so I thought I'd give this a go.

A couple of questions (that I haven't found in this thread)

- Any tips for updating the firmware on the controllers/brake/shifters - I've had no issues updating firmware on the RD and FD but every time I try to do the controllers, they seem to be updating (download step works) but then fail on the installing step - and then I need to reconnect the controller to try again - almost as if they're going to sleep.

- Is it possible to switch around what the buttons do - currently my right shifter, the big button shifts to harder gears while the smaller one shifts to easier gear - opposite to my di2 - so ideally I'd like to swap them round. I can see that you can switch which controller controls front or rear mech but not the buttons themselves.

Thanks!

I've now managed to get the shifters updated so that's the first issue solved (kept the bluetooth button pressed while running the update - worked first time on the right, took a few goes still on the left one).

Still wondering about the shifting buttons - anyone know if you can switch around what they do?

Just got my ER9 groupset - on initial look, it seems great especially for the money - I've been using GRT 12 on my gravel bike and am very happy with that so I thought I'd give this a go.

A couple of questions (that I haven't found in this thread)

- Any tips for updating the firmware on the controllers/brake/shifters - I've had no issues updating firmware on the RD and FD but every time I try to do the controllers, they seem to be updating (download step works) but then fail on the installing step - and then I need to reconnect the controller to try again - almost as if they're going to sleep.

- Is it possible to switch around what the buttons do - currently my right shifter, the big button shifts to harder gears while the smaller one shifts to easier gear - opposite to my di2 - so ideally I'd like to swap them round. I can see that you can switch which controller controls front or rear mech but not the buttons themselves.

Thanks!

I got my Pro-145 a few weeks back now. I got it in gloss black as I was intending to paint it myself.

I ordered a 58 with 120/440 handlebar - I'm 6'5" so I know I'm on the limit but geometry charts suggested it would be ok though I have a fairly large spacer stack (55mm) under the handlebar. BB to top of saddle height for me is 83cm.

I received my frame in line with agreed dates. It was well packaged and everything was present. The paint it comes with looks smooth and seems tough and durable (small knocks with tools during the build didn't scratch it).

The build was pretty smooth - the easiest 'direct from China' build I've had so far and at least as good as any more well known brands. I had no issues getting cables through the seatstays which has often been an issue with other frames I've built.

Fitting all the cables in the handlebar/steerer as a fully integrated/hidden cable build was a pain but that's normal for any bike with this design and again, the same as branded bikes I've built - essentially the price you pay for a lovely, neat looking front end.

Once built up, it looks fantastic so I was looking forward to my first ride. The only issue I had was that I had greased all the seatpost/saddle fixing parts and that seemed to slip quite easily unless done up very tight. I stripped and cleaned the seatpost and used carbon assembly compound (designed to stop slipping) and it's been rock solid since.

In terms of ride, I've built it up with Ultegra, aluminium wheels with 32mm GP5000s and straight away I was taken by how smooth it felt - I did think it might be a bit harsh given the chunky looking design and tubes but it was at least as smooth as the other bikes I have, maybe even more. It handles perfectly - no issues climbing, descending and it's nice and quiet and smooth.

One caveat is that the headset has come slightly loose the first couple of rides - I've now used some of the aforementioned carbon assembly paste so we'll see if that helps keep everything together. UPDATE - Used assembly paste on the steerer bung and the headset hasn't come loose since despite several rides on my local roads which are pretty bumpy in places.

I'm very happy - looking forward to many miles on it.

Looks great Adrian - would you mind letting me know your own dimesions(!) - height, etc - looking at a 58 and wondering how it sizes up in practice.

Anyone seen these in the flesh? - the real AB one is of course silly but at this sort of price (<50GBP and maybe cheaper), it's starting to get tempting - it does at least look good!

https://www.aliexpress.com/item/1005007619471052.html