M101 mic. This mic is 150ohm which can be used on both analog and new digital radios.

Adapter: IMSA harness to Nascar helmet
Note: This will only work with Kenwood, TID and Boafeng radios only!

Speakers for a build your own helmet kit

Built to work in high noise environments. Designed to block out all background noise 100% while offering perfect voice clarity. Replacement for Gentex Military microphones. Can be used with both Digital and Analog 2-way radios.