IMSA Helmet Harness for Earbuds.

Earbuds not included

IMSA Helmet Plug and Switchcraft jack for all standard 3.5mm ear plugs.  

This racing helmet kits feature a straight line easy to use, prewired mount system. Durable polyurethane insulation provides strength, flexibility and resistance to abrasion while spiral shielding provides superior protection [3M shrink wrapped] against radio frequency (RF) and electro-magnetic (EM) interference.