04-12 BMW R1200GS: Sargent World Sport Performance Low Seat (Black Welt) At Sargent's, revolutionary thinking is an everyday process. Never satisfied with the status quo, their Research and Development Team is constantly striving to bring you the ultimate in high-performance, distinctive seating and upholstery products. Each World Sport Performance Seat is made with the durable and lightweight PolyTec or CarbonTec seat pan, Super Cell Atomic Foam suspension, and dazzling, color-coordinated upholstery. State-of-the-art replacement seats. Seats are built on a precision-molded, lightweight PolyTec or CarbonTec base pan.