I finally caved in and got the XM radio antenna for Zumo 550. Am I ever pleased. Although I prefer Sirius stations, I'm digging the endless music, the traffic data services, and especially the weather feature!! Only problem was finding a suitable mounting point on the R-Sport. I don't like a lot of intrusive gear on my bars, so I fashioned a mount point up by the clocks... I believe this should work for the "R" as well. Each step below corresponds to each image.
Step 1 - Remove the windscreen held by 4 bolts. Remove instrument cover by pulling up and off (two grommets at the widest part, and two tabs at the narrow part). Remove instrument cluster by unplugging cable, and three metal clips.
Step 2 - I used a 6 inch flat corner brace from the Home Depot... pretty standard.
Step 3 - Measure and hacksaw.
Step 4 - Dremmel grind that bitch to contour and soften the edges.
Step 5 - Unbolt the Instrument holder bracket, put some 3M automotive tape to protect the black metal surface, and slide the new bracket underneath to line up with the hole. I confess I started out mounting on the left side of instrument cluster, and changed my mind to put on the right side. Either side will do, but I had all my HID wires running along the left side. With all the juice running through those wires during ignition, it induced the shit out of my XM antenna, scrambling it for several seconds.
No permanent damage fortunately.
Step 6 - Attached the XM antenna to provided mounting disk. Bolt through the bracket hole from below and a cap nut goes on top. Also applied silicon to as much contact area between bracket and mounting disk so it doesn't spin around single bolting point. Be sure to check alignment with instrument cluster in place before bolting and silicon. There needs to be enough clearance so the cluster can jostle and vibrate unimpeded on the rubber mounts.
Step 7 - Put all the parts back on. Careful with the instrument cover so the grommets don't pop out! Use a finger inside to help it snap in place. Also, the GF reminded me to put a washer under opposite side of instrument cluster bracket to balance the height (of course after I had put it all together
Step 8 - Let 'er rip! Works like a charm. I get 3/3 bar signal most everywhere, with 2 bars under the trees. I have had 2 brief (<1 sec) fades when leaning hard under tree cover on my 45 min test run. I'm setting out for Nova Scotia tomorrow; I'll report more on reception when I get back.