J&M Performance Series Headset with HO AeroMike III for Modular Helmets, These headsets provide the industrys vest combination of wind and ambient noise reduction with J and Ms standard and hight-output AeroMike III miniature microphones, HO AeroMike for use with Harley-Davidson, Victory Vision and Kawasaki audio systems Superior audio fidelity has been achieved with J and Ms new large diameter DynaPort, non-ported and Ultra-slim helmet speakers The versatility of J and Ms P-series 2-piece cord system allows these headsets to be connected to any factory installed motorcycle audio system ever built, just by interchanging the lower-section hook-up cord NOTE: Proper acoustical installation is required, exact type will vary depending on application.