NASCAR Car Harness Racing Communications Supports IMSA helmet kits with

Supports IMSA helmet kits with IMSA-to-NASCAR adapter

They can be wired for mono earbuds as well but stereo is the most common

the microphone impedence and style does not always allow for the same universal interchangeability with a standard NASCAR helmet kit

Slim-line molded Y-block and are pre-wired for easy installation in any type of helmet

The Nerdie NASCAR System is a 3-conductor race communication system designed by a racer for racers

NASCAR Car Harness Racing Communications Supports IMSA helmet kits withNASCAR Car Harness (3 Conductor) 1 4" Switchcraft metal helmet jack for lasting durability 3 Conductor System using 1 4" Stereo Jacks and Plugs Robust Y Block with 6 foot leads for helmet and PTT (Push To Talk) Use with 1 4" NASCAR Helmet Kits Supports IMSA helmet kits with IMSA to NASCAR adapter. EasyLink 5 pin connector allows use with most hand held radios