In reply to RCC:
> Just wanted to make the point that for young kids, being able to enjoy cycling is more important than the technical specs of the bike. Some kids will care about features (more often they go for decoration), other times it might be more driven by the parent (not that there's anything wrong with that)! It isn't necessary to buy a top end bike.
I largely agree, but if they're going to be cycling dedicated mountain bike trails (as the original post suggested - and mine was doing downhill sections of blue trails under control at 4), then having a decent bike is likely to make it easier, and increase their enjoyment of it.....far less of an issue if they're mainly going to be riding flat roads and easy cycle tracks. I suspect, too, kids whose parents are regular mountain bikers are going to be more interested in having a bike like mum and dad than having a bike with Ben 10 or Barbie on it.
The downside is that all the parents I know of older kids who've taken a similar approach are now terrified of the speed their kids downhill.....