Fits ‘18-later FLFB, FLFBS, FLSL, FXBB, FXBR, FXBRS, FXLR, FXLRS, FXST and '21-later FXBBS models. Includes chrome muffler end caps. Installation requires separate purchase of Muffler Clamps P/N 65900012 (Qty 2) and Exhaust Gaskets P/N 65900017 (Qty 2). All models require ECM calibration with Screamin’ Eagle^® Pro Street Tuner (sold separately). Pending approval for use in California on '21 models. Refer to H-D.com/shop for status.