I've got a Pro-M1 that I had on my ride (took it out over the winter, since my friends won't invest in radios and I never carry a passenger, so I use in-ear headphones wired straight to the Zumo.
There's no reason why a system quoted by Keith wouldn't have a GMRS radio included, though it is not part of any basic kit.
Autocom gear is very robust. The microphones require proper positioning and are NOT intrusive. I have their Bluetooth dongle for the system - I'm not a believer in battery powered Bluetooth helmet units like the Scala because my travel time usually exzceeds the unit operating time . . . . . but you can interface all manner of equipment, from iPids to navigators to radios and so on without limit, as long as you get the proper accessories.
If you plan to use a GMRS radio, investing in their 3-way PTT adapter is a must - it has a switch that selects the mode for the transceiver - you can lock the transmitter on (if you are playing tour guide, or are an instructor), use it in VOX mode or you can set it for manual PTT - the PTT switch is part of ther assembly. It it tie-wrapped to the left grip and looks like it was designed for the FJR.
Youi could do much worse than Autocom - Baehr makes nicer gear, everyone else makes stuff that's somewhat below.
Autocom got into financial difficulty and was sold last year and ther new owners seem to be maintaiing the brand.
I'm not looking to hijack the thread, but I'm open to opffers if anyone actually wants a very complete Pro-M1 system with lots of bits and pieces (I sold off one of my 2 Kenwood TK3100 GMRS radios, the PTT adapter and the one set of interface cables I had for it last year), but I have isolators, a GPS interface cable, Bluetooth dongle, mixers, headphone adapter, coiled and straight cables, headsets, the battery eliminator and so on - I have something like $1,200 invested in the gear.