Fits ’16-'17 Softail^® and '14-'16 Touring models. Does not fit Trike models, FLSS, FLSTFBS, CVO^™ 110 models or models with engine cases that have been machined to accept large-bore cylinders. Requires separate purchase of Cam Drive Retention Kit P/N 25566-06. Cam Spacer Kit P/N 25928-06 is recommended. Twin-Cooled models require separate purchase of model-specific head gaskets. All models require recalibration with Screamin' Eagle^® Pro Street Tuner (sold separately).