I think the QuickPro TT:ONE is currently the lightest TT bike with UDH to come out from China. I could easily be wrong though, would be happy to find something else myself.

Spend time in any Reddit Bike Fitter thread and you'll see that not even two professional fitters can agree. So I chuckle when folks speak in absolute terms about another rider's fit. Perhaps they are plenty comfortable and are still achieving the results they're looking for.

Has anyone purchased one of these yet?

I'm very intrigued by this frame. I think it might jump ahead of the VB TT023 for me, because of how nice the cockpit is looking!

anyone aware of similar frames available in XL or XXL (~61cm) frame sizes?

Hi guys thanks for everybodys information here, I've learned a lot. I'm looking at a build, it will be my first bike build so any feedback welcome. I noticed most in here have built up with a 1x chainring, wonder if there's any reason for this or just preference? Anything wrong with going 2x? What I'm thinking below (prices AUD):

Frame   Velobuild TT023                   1433
Wheels   10Plus 60mm                   500
Groupset   Ltwoo ERX TT                   1300
Crankset   "Magene PES 515 52-36   537
Chain   KMC X12                           50
Casette   Shimano 11-30                   120
Tyres   F1 Supersport                   120
Saddle   Ryet   TT 3D                        150
Rotors   Zrace 140/160                   25
Bottom Bracket   Token 24I                   50