Brand new off of my 1250RSZero milesRear rack and GPS prep kit GPS list (USA) $446 yours for only $300 plus ship/fees Rack list (USA) +/- $344 yours for only $200 plus ship/suppliesstevensivak@outlook.com
You can add a smaller amount of weight with Puig covers for the rack mount. Hornig sells them and has a YouTube video.