You must register your snowmobile if you operate the snowmobile in New York State. A snowmobile that is registered in another state and owned by a resident of that state, but is operated in NYS, must get a NYS registration. New York State also requires a registration on trailers.
Visit the NYS DMV website for more information.
Suite 204
Menands, NY 12204
518-626-8989
dmv.ny.gov/registration/how-register-snowmobile