Access Mud Flaps A1040041 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; Smooth Mill; Access Rockstar 2019+ Ram 1500 Smooth Mill Finish Hitch Mounted Mud Flaps