Why wouldn't she? She knows how much it means to him as well.

Because she might care more about his safety?

You cannot know how good it feels to know that my son's safety is on your mind. I believe that a community as a whole should look out for the safety of it's children.

Will his mom be against this purchase?

Of course this is possible, however, I will assure her of the safety features and create as many barriers to injury as humanly possible. Full Face Helmet, body armor, riding boots, riding lessons from the pros (I know a few bikers) and very strict rules with privileges dependent upon adherence to those rules. Now I realize that this might make his limitations somewhat higher than his friends, but I am sure that I can work it out so that safety is first. BTW, his friends do not have free range on theirs either, they are strictly guarded and closely watched.

And if all else fails, my son and I will have a talk, and he may be satisfied instead with a ultra safe Go Cart he can ride in the yard without worries. Besides, I have to win first.

One more thing, I could load up a bunch of YouTube vids of people wrecking bikes, they are everywhere, but those people were poorly trained, poorly supervised or doing very stupid stunts. And they are the minority not the majority

Again, you and I both have my son's safety at heart here, so no worries, and thanks.

yes, they can be quite dangerous if not handled properly or without the proper safety equipment or procedures. I too have seen a catastrophe or 3. Luckily, my son's uncle (my own bro) use to race dirt bikes some years ago and has a great deal of experience with the safety end of it. And truly, the good Mini Bikes actually have key fobs for "Dad" that have a kill switch and speed control features that operate remotely. Thank you for your vote, and I am very sorry for the loss of whoever's funeral you had to attend. Trust me, on this one, safety will come first, the fun will be second.