Fits ’18-later FLFB, FLSB, FXBB, FXBR, FXFB and '18-'19 FXBRS models with Original Equipment perimeter-bolt air cleaner cover. Not recommended for use with center-bolt air cleaner covers or trim. All models require ECM calibration with Screamin’ Eagle® Pro Street Tuner for proper installation. Pending approval for use in California on '21 models. Refer to H-D.com/shop for status.