 Buffalo Wild Wings presents a must-see two-day event at River City Speedway Grand Forks this Friday and Saturday. The third annual King of the Wings IRA Sprint Cars vs. NOSA Sprint Cars. Also racing IMC Receiver Sprints, Lightning Sprints, and Renegade Wingless Sprints. Adults always save three bucks at advance ticket outlets. Don't miss this must-see two-day event Friday and Saturday at River City Speedway Grand Forks. Brought to you in part by Cruise Light, Pepsi, Napa Auto Parts, and the Rock Powell Shop.