KKBO (105.9 FM, "The Big Rig") is a country music radio station in Bismarck, North Dakota (licensed to Flasher). It serves the Bismarck-Mandan metropolitan area. The station broadcasts from a storefront studio on North 4th Street in Bismarck (along with sister station KXRV) competing against iHeartMedia's KQDY/94.5, KBMR/1130, and Townsquare Media's KUSB "US 103.3".