boat dealer in South Dakota

Specializing in sales of Diamond C Trailers and Prime Attachments

Here at Interstate Auto & Boat we strive for the best customer service possible. Thats why we've been in business for 30 years!

The Great Outdoors Motorsports & Marine is a dealer in Rapid City, SD featuring ATVs, side by sides, and snowmobiles. We offer sales, parts, service, and financing to western South Dakota, includ…