Dialed in to enhance the performance of the Milwaukee-Eight® engine, these slip-on mufflers feature a large inlet for improved airflow. When teamed with a free-flowing air cleaner, these Street Cannon mufflers deliver horsepower and torque gains you can feel. Harley-Davidson - 64900552A. Fits ’17-later Touring models. Does not fit Trike models. Installation requires separate purchase of Muffler Clamps P/N 65900012 and 65900015. Requires separate purchase of end caps. All models require ECM calibration with Screamin’ Eagle® Pro Street Tuner for proper installation. Unsure if this will fit your bike? Or want to know if this is available for your bike? Call the parts department at the store to confirm 519-371-6666.