S.D. Codified Laws § 32-20A-15
The title issuance, excise tax, vehicle registration, and dealer licensing provisions of chapters 32-3 to 32-6B, inclusive, apply to snowmobiles. In addition, all snowmobiles used on public lands, private lands, and any frozen public waters within the territorial limits of this state shall be licensed pursuant to § 32-5-90 or have a permit as provided in § 32-20A-15.1. Any snowmobile used by a resident of the state on property owned by him is exempt from the licensing requirements. Any super modified snowmobile built exclusively for organized track racing events on raceway facilities is exempt from the title registration and licensing requirements. Upon the sale of each new snowmobile by a snowmobile dealer, the dealer or applicant shall deliver to the county treasurer of the applicant's residence the snowmobile manufacturer's statement of origin, the required fees and taxes, and completed vehicle title registration forms for the snowmobile. If the snowmobile has not been sold by a licensed snowmobile dealer, the snowmobile owner is responsible for registering and titling the snowmobile, and for the payment of any fees and taxes. A violation of this section is a Class 2 misdemeanor.
SDCL 32-20A-15