Access Mud Flaps A1020031 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; Hitch Mount; 24 in. x 24 in.; Trim To Fit Flap; Access Rockstar 07-14 Full Size Chevy / GMC Trim to Fit Mud Flaps (Heat Shield Recommended)