J&L Harley-Davidson and Glacial Lakes Harley-Davidson are dedicated to making sure riders across the Upper Midwest have access to dealerships with the best service, biggest selection and most enjoyable experience around. J&L Harley-Davidson is the flagship store, located just off I-29 on exit 83 in Sioux Falls. The dealership has been a strong partner in the community for 40 years. We have built an amazing family of riders, united with one passion: the Harley-Davidson motorcycle.