Access Mud Flaps A1010032 ROCKSTAR(TM) mud flaps are the best fitting hitch mounted mud flaps! The unique model specific design features a custom fit aluminum frame with stabilizer plate, stainless steel hardware and 1/2" rubber flaps. ROCKSTAR" Mud Flap ROCKSTAR" Mud Flap; Diamond Plate; Hitch Mount; 20.5 in. x 24 in.; Access Rockstar 04+ F-350 Mud Flaps