Two-Way Communication Helmet Kit (4/C IMSA Coil)
Racing Radios 4 Conductor IMSA coil cord helmet kit. Used mostly in sports car racing. IMSA, Grand-Am, SCCA, etc. It allows the driver to have some movement with the helmet with the coiled cable. The cit comes with a 3.5mm earpiece connection and top of the line noise-canceling microphone.
*comes with installation instructions and mounting hardware for Non-Drill and Drill methods.