If it is such a BIG ISSUE in the USA, then why are these systems available? Could it be that somebody somewhere (yes, even in your own country!) can use these?
I pick up a copy of "Motocross Action" and they rate the Whitebro's carbon pro 2 a 5 star product, same with the procircuit Ti GP system. When I pick up an issue of "Dirtbike" the American offroad mag, all I see is all the riders, not just the top riders, using systems such as the Procircuit Ti GP lowboy system, the Yoshimura system and FMF factory 4.1 systems. What the hell do "young" people go out and do???? You guessed it, buy what their favorite rider is using.
I am not being negative against you or anyone else here (you may think that I am) but why bag out people that can legally and with out consequence use them??? I am still trying to figure this out. OK, you don't like loud pipes. I absolutely love the performance gain of my pipe. It has added the most power to my bike out of all the things I have done to it. Here is something that may shock you, if I had have got myself a YZ450, I would have left it STANDARD. I didn't get a YZ because I ride offroad. The stock WR sucks ass and ANYONE here will tell you so. My bike is now on par power wise to a YZ. It is alot easier to ride with that power, I am 240lb, I need it.
Again, I think you are missing our point here. It's not an issue of legality. It's an issue of pissing people off that HATE the noise. I personally don't mind the noise. I love it as a matter of fact. However, before I rode, I HATED the noise. It irritated me and made me "anxious". I completely understand where these people are coming from. You have parents here that couldn't care less if their kid is ripping up and down the street all day on his 250f and loud pipe. Should the parents not let their kids do it? Of course. However the issue is not parenting (we could start another thread that would go on for years about that), it's noise. Everytime somebody rips down the street, or past a horse rider, etc... they are pissing off somebody. Now that person may not have had an opinion one way or another on the "dirt bike noise" issue previously, however now they do. And it's not on our side. Now the opposition has gained one more vote when land closures come up in the next vote.
We are arguing about an issue that doesn't concern you. You're lucky that you don't have these issues to deal with in your country. We do. It sucks, but they need to be dealt with or we're doomed over here.
As far as kids are concerned, yes they do buy whatever the champ is using. So do the adults. All I have to say about that is they are sheep. They play follow the leader, and do what "everyone else is doing". The RM250 has argueably been the best 250 for a few years now, but you didn't see anybody on them until RC was last year. Why? Because they didn't have a championship rider. Once again, people are sheep.
The manufactures of loud systems are their own worse enemies. They are making these systems that will eventually put them out of business. The fact of the matter is, the dirt bike industry is influenced by sales in the US. If they don't start doing something about it now, we're all in trouble over here.
We should all be on the same side here. After all, we (you, I, and every other rider) should be strengthening our side by coming together. All we are trying to do is protect our dwindling riding areas.
Now if you'll excuse me, I'm going riding, then I'm off to Supercross, Anaheim 1.