Unless your CR500 is older than 86, it’s illegal to drive it on the highway (as in, can’t get registration or plates illegal), and your KTM 125 would have to be a four stroke to be street legal. The poster was talking about two strokes like his old Bultaco.
Unless you are seriously suggesting that a thousand almost-thirty-year-old dirtbikes are assaulting Saint Louis roads, I think we can scratch those off the list.
My ‘taco was a 73 and was grandfathered, at least here in Illinois.
Washington State has a new law taking effect Jan 1 allowing dirt bikes to be registered for street use after installation of a dual purpose kit and inspection by the State Patrol. Emissions (2 vs 4st) is irrelevant. I do plan to go forward with this (using the ‘86 CR500). This used to be done all the time but a couple of years ago the state started clamping down. But during the last legislative session the new law was passed and the governor signed it so we are back in business.
I think it’s a Moped gang.