Fits ’14-later XL, '16-'17 Dyna® FXDLS, '16-later Softail®, '14-later Touring and '17-later Trike models. Installation requires exhaust modification to incorporate wide-band oxygen sensors. Some models require Oxygen Sensor Harness Extension. For model specific installation requirements see Installation Instructions on H-D.com/shop. All models require ECM calibration with Screamin’ Eagle® Pro Street Tuner or dealership installed Screamin' Eagle calibration for proper installation. 50-State U.S. EPA Compliant. Pending approval in California.