J&M Audio sells kits that can e installed in any helmet if your brave enough to do the surgery.
Kit I bought isn't one with bluetooth, just audio and helmet to helmet communication and the sound quality is very good with full face helmet. It has a separate box to dump all the inputs in and it sorts them out by priority, radar detector audio, phone, voice, music...I havent looked lately to see what technology they have now...I mostly use it for music cause it jacks the power up from my MP3 so I can actually hear it..