These are 3.5″ mono helmet speakers with Velcro mounting. They have Velcro mount speakers with a 3.5mm mono plug and are perfect for speedway, motocross, street, and other helmet applications.
The universal 3.5mm jack on the speakers works with all Harris OneWay Receivers, Racecevers, iPhones, iPods, and most MP3 players.
This accessory plugs into Harris Race Radios helmet kits.
