4 seat kit comes with required equipment needed for the rider in each seat, including: 1 NNT10 intercom, 2 NB200 behind the neck headsets (FRONT) 2 HEC10 cables and 2 HCF4 cables Dual band car to car radio Behind the neck headsets (FRONT) Intercom to headset cable (REAR) Cable to connect the NCR2 radio to the NNT10 intercom Mounting bracket sold separately. INTERCOM/RADIO KIT 4SEAT