Just my tuppence……
Built my lad a DMR Trailstar 2 years ago as a do anything bike.(£300 all in).
First it was single speed, but this was too much so put a double and bash on with gears, so no issues peddling, brakes are simple discs and a short travel 100mm air fork. Decent bars and stem and thats about it.
He rides trail centres, BMX park, canal paths everything in fact and I think its a brilliant little bike for a youngster as it is bombproof really. I can add a ISCG chain device, fit bigger brakes or a longer fork (Pike) but I’m not sure how a downhill bike would improve his enjoyment unless he decides he really is going to do proper downhills or uplift days?
I’d of thought bike weight might be an issue on a full suss,a customer brought in a stinky 24 last week that he had bought for his 10 year old. It weighed 36lbs and he was struggling to get it moving.
My lad weighed about 40 kg, when they are this light can they really get a long travel fork/shock to work properly on a downhill bike?
BTR offer some great options but big money.
Richard