ASK FOR SALES (855) 804-6450. Iowa's only dealer that is home of Warranty Forever. We think you'll agree that Big Barn Harley-Davidson®, the big yellow barn, is one of the finest Harley-Davidson® dealerships in the nation. At Big Barn Harley-Harley-Davidson® in Des Moines, we all have a passion for the freedom of riding and our friendly staff is happy to help you in any way we can. Thanks to all our friends – past, present, and future – we look forward to seeing you soon!