Rear Seat Expansion Kit with Helmet Kits or Headsets Select Helmet Kit or Headset:AlphaBass - Over The Head We know their limits and

We know their limits and their strengths because we’ve put them through rigorous testing in our cutting-edge lab and in real world riding scenarios all across the country

These come with all the hardware needed to mount them

(1) Twist knob

all models

With Dynojet's Maverick R Boost Commander Kit

Rear Seat Expansion Kit with Helmet Kits or Headsets Select Helmet Kit or Headset:AlphaBass - Over The Head We know their limits andExpand your two person intercom system to 4 persons with these expansion packs. Available in headset and helmet kit options for STX Stereo and Mono Intercoms with 16' cables to reach the back seats. (see compatibility info below) AlphaBass Headset Features: TRUE Carbon fiber in AlphaBass models Leather ear seals Flex Boom Mic M101 Red dynamic noise cancelling mic Easy to use volume and bass control Ultimate Mono and STX Headset Features: Carbon Fiber