so far so good! seems sturdy and works great... a little hard for 4 year old legs to get going, but really fun even on uneven ground.
This thing is super cool, it's fast, durable and the only problem now is keeping a helmet on the kid because man that thing can turn. I spent the extra 1 because I expected quality and I can't speak for the long run but it sure feels like I got it. Easy to put together.