I just finished a 26" bike build for my 10 year old daughter, which ended up sightly below 10 kgs.  I'd like to bring down the weight a little bit, as I am planning to do some multi-day bike tours with her this summer.

I used a cheap, used Fulcrum wheel set, which is quite heavy at 1.800g.

Compared to 700C road bike wheel sets, there aren't a lot of 26" carbon wheels options around, especially at the lower end of the price spectrum.

Are there any 26" carbon disc wheels with a quick release option available at around $300?

PS: That's the frame I used: https://www.aliexpress.com/item/4000735177339.html

what width tyres do you like to run?

I usually run something around 26-28mm.

prob get them for 800 shipped with a dt350 and whatever sapim cx spokes you want and sapim nips. maybe cx supers for a lighter wheel if that's what you're after.

I checked https://www.farsports.com/ and saw their C3 wheels (1295g) for 1,200g. I guess you were talking about some other wheel set by that brand?

There aren't many performance oriented frames with these dimensions. Most will be endurance with such a high stack
What reach you looking for? Guessing 400+

Yes, reach around 410 would be nice, but longer stem should work, too.

Thanks for the pointer to the Yishun R068-D frame. This should work for this rider. How much did you pay for yours?

Do you have a link to this frame you could share? I'm looking for a frame for a 193cm tall rider (6ft 3), and this looks like a good option.

Seems there aren't many modern frames (through axle, internal routing, disc brakes) available for taller riders (stack ~405, reach ~610). besides the TanTan X-34.