4C IMSA Wired Helmet Kit with Speakers and Mic headlight Some will offer different clutch

Some will offer different clutch kits for 2016 vs 2017-19 models

- Evolved closed tread pattern reduces drivetrain strain without reducing traction

Each radio has their own dedicated speaker and push to talk button

(1) Set screw - Allen 1/16"

5mm  port

4C IMSA Wired Helmet Kit with Speakers and Mic headlight Some will offer different clutchDesigned for road racing, the IMSA Wired Helmet Kit with speakers and mic delivers loud, race ready audio and clear driver communication. Trusted in open wheel and sports car series like LMP2, GT3, GT4, and TCR. This kit features a 4 conductor IMSA configuration and installs easily into most helmets. Features: IMSA 4 conductor configuration for road racing and performance circuits Helmet speakers produce loud, clear audio for the best communication