J&M performance 291 series helmet headset has been designed for installation into most flip-up modular, open-face and full-coverage style helmets. It features our miniature extra-high-output (XHO) AeroMike® VI boom microphone, (re-tuned for use with all factory installed motorcycle audio systems), new slim-line 40mm high-intensity helmet speakers for improved on-highway audio performance, along with our 8-pin two-piece hook-up cord system (upper cord ONLY included with headset) that allows connection of these headsets to any factory installed motorcycle audio system in existence today, including the 1998-2018 Harley Infotainment systems & Honda GL-1800 Premium Audio, just by interchanging the lower section hook-up cord.