No, the current limitation of Bluetooth Technology is the ability to communicate with multiple bikes. The best way to communicate bike to bike, with many other riders is to use a two way radio with the BTA-R kit. You will lose the ability to pair your phone, however you will be able to communicate with multiple other bikes.
Yes, the kit comes with two styles of mounting system that allow the module to be mounted directly to the shell with the double sided adhesive mount, as well as a bracket that slides in between the shell and liner. The BTS200H and BTS300H will work for riders with beanie helmets, and can even be worn by riders who ride with no helmet. Riders with no helmets can place the Bluetooth module in their pocket.
The Garmin Zumo 550 does not support the AVRCP or remote control profile which is needed to adjust the volume remotely. Utilizing a stereo adapter with A2DP and AVRCP allows adjustment of volume as well as transmission of stereo music from the Zumo.
The VOX function controls whether the intercom channel (CH 2) is active or inactive. Channel 2 turns off automatically every 30 sec if it doesn’t recognize any voice signals. The advantage is that no side noises will be transferred if there is no intercom communication. Channel 1 is still active, e.g. Music or GPS.