I don't know about Bluetooth but on my last bike I had XM mounted and ran a long extension cable that was just a few $ and worked great. Plugged into the output on the XM unit and then the speakers plugged into the other end as yours would into your phone. Swapped the unit between the bike and the car.
2012 Victory Cross Country Tour, Sunset Red.
Parts added to make her louder, faster and more mine.
Stage 1 filter and pipes, Lloydz VFIII & ATW.
Clearwater Darla, LED GLO, emergency lights and siren.
Bushtec hitch and harness, Kompact Kamp trailer.