Can someone tell me what's going on with Nevada stopping the registration of street legal dirt bikes?

Most of your dirt bikes do not meet federal emission standards, by allowing the dirt bikes to be licensed on the road, Nevada was breaking a federal law. The only way they can be legal is for all emission controls that the street bikes have, to be installed on the dirt bikes. None of the two stroke bikes could meet the emission standards. Not to mention safety standards, that is proper lights mirrors, etc.

It depends on your local laws. In many locations, if a motorcycle is designated from the factory as "Off Road Use Only", it can not be made street legal no matter what you do. In many locations, if it has a 2 stroke motor, it can not be made street legal because of emissions requirements. In areas where they can be made street legal, you will need to add a headlight, tail light, brake light, turn signals, street tires, speedometer, mirrors, and a horn. You may also need to change your muffler. You may also want to change your sprockets so your bike can better handle sustained highway speeds. Even if your bike can achieve highway speed, how long will it be able to maintain it. You really need to contact your local DMV before making these modifications so you don't waste a lot of money on a bike that will not be street legal. You may also have a problem because a dirt bike electrical system may not have the capacity to handle these additional electrical requirements. If you need a street / trail bike, you would be better off selling your dirt bike and put the money from the sale towards a motorcycle that is already street legal.

The registration of a bike originally designed for off road use and converted to street use is the problem;... and yes, it has to do with the emissions regulations. However, dual purpose bikes ARE being allowed to be registered. Those bikes are designed to meet, and have engines & exhaust systems that do meet EPA reg's.

Taking a dirt bike and converting has been popular because the weight savings and performance has advantages over the street legal-designed contemporary, but is wildly irresponsible.

I didn't know, and was not aware Harley made dirt bikes.... nice going staying on point & context, there DRUNKARD.... Harley bash FAIL.

Most of your harleys do not meet emission control standards because the exhaust and carburetors (or FI) have been replaced with aftermarket ''off road'' parts.

America can't pay her bills, but there's still money to regulate small displacement engines that only run a few hours a week.