Fits '17-later FLHTCU, FLHTCUL, FLHTK, FLHTKL, FLHTKSE, FLTRU and FLTRUSE models. Also fits FLHT, FLHX, FLHXS, FLTRX, FLTRXS and '17-'21 FLHXSE models equipped with a King Tour-Pak®, rigid Tour-Pak® mounting rack, Boom!™ Box audio system, and Boom!™ Audio Rear Speaker Enclosure Kit P/N 76000505. Does not fit '20-later FLHTCUTGSE models. Does not fit '21-later FLHXSE and FLTRXSE models. '17-'20 FLHXSE models require purchase of Audio Input Harness P/N 69201477. ‘18-later FLHTKSE requires separate purchase of Speaker Interconnect Harness P/N 69201930 and Rear Speaker Jumper Harness P/N 69200489. ‘17 FLHTKSE and FLTRUSE models require purchase of Speaker Interconnect Harness P/N 69200714 and Rear Speaker Jumper Harness P/N 69200489. Not compatible with models equipped with Stage I Boom!™ Audio components. Does not fit models with H-D® Detachables™ Tour-Pak® Mounting Rack.