NO NO NO NO NO NO NO.
The 150F's were thrown out of our nationals a couple of years ago but there are still clubs and meetings that still allow them.
A guy I work with , his son is 1 of the top 11 year olds over here and we were talking about this just the other day.
While there is not much between the bikes when standard there is when money is spent.
A kid his son raced against a couple of weeks ago had $15k worth of Pro Circuit bits in the bike.

Thats just bullshit for a kids bikes.
For the record the 85's could not keep up with that particular 150 down the straight.
When that same kid has to race a 85 in the nationals he is average.
Check book racing for kids is just dumb.
If Honda want kids to ride their 150's they should start their own series or just piss off.