The Rugged Radios Rear Seat Expansion Kit adds passenger communications with behind-the-head helmet kits and an AlphaBass headset option. It bundles helmet-compatible wiring and headset hardware to let rear-seat occupants share the vehicle intercom, providing a controlled, headset-based solution for multi-rider communication without altering core radio components.
Rugged Radios Rear Seat Expansion Kit w/ Helmet Kits / AlphaBass Headset - Behind the Head