I settled on a Spawn Ruiju in black.
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Everything else was a compromise or completely sold out (this is really a problem with almost all supplies in Asian countries not shipping frames).
Things that were a must for my boy:
Cool color.
At or below 20lbs. (He's 40lbs. I'm picky about 3 lbs on a dirtbike, Can you imagine how riding a bike that weighs half of your weight feels?)
19" standover (he's 5yrs old and doesn't want to rack himself and ALL the others I looked at were 22"+)
2.0+ tires. (I liked the Saracen for example but it had 1.9" tires so I would have to add another $80 for 2.3 tires and more if I wanted discs).
Disc brakes.
114mm-125mm crank length. (This is a must as I found longer lengths on lots of bikes my boy rode made his hips rock back and forth and bent his knees WAY high up close to the seat with his low seat height.) I think correct crank length- sized to your kids height is key for power and enjoyment.
Good components:
I don't want something I would have to change immediately. (i.e good pedals, good kid sized seat, quick release seat post, good tires, SMALL actual kid sized levers.)
I can add a Grinder Air 20 50mm fork later if I feel he needs it (and it's only $140 with remote lockout)
I love Spawn Cycles. They are 100% kid committed. Designed in Squamish B.C. and the US distribution center in in SLC.
Whenever I've had a question I've been able to call and talk to a human person who sells KID bikes only and their kids ride bikes.
The bikes are LIGHT and Tough for my little destroyer.