Check out this Yamaha RS Viking Professional Snowmobile detachable Passenger Seat, including both the Tandem Seat Assembly, Seat Back Assembly and Seat Cover. Retail value as you know is just over $600. I believe these are the part no's. TANDEM SEAT ASSY 8FN-24750-01-00 SEAT COVER COMP. ,2 8FN-2470H-01-00 SEAT BACK ASSY 8FN-24790-00-00 Check out the photos, do your due diligence (I am not a Yamaha expert.) and get this seat for a steal! Shipping is $27.00 (check with me for AL, HI and International, as rates there will differ).