Saddlemen Step Up Seat for Harley Davidson. Step Up Seat The Ultra-Foam's unique moulding process creates an element-resistant, self-skinning process that seals the foam from water and enhances the seat's durability as well as comfort Blends rider and passenger comfort with the ergonomics required to keep the rider locked in place and in control of the bike Combines a GelCoreT interior with Ultra-Foam that creates a perfect balance of rigidity and user compliance All mounting hardware and instructions are included for easy installation. Harley-Davidson FLFBS 1868 ABS Softail Fat Boy 114 - 2021 Harley-Davidson FLFB 1750 ABS Softail Fat Boy 107 2018 - 2020 Harley-Davidson FLFBS 1868 ABS Softail Fat Boy 114 2018 - 2019 Harley-Davidson FLFBS 1868 ABS Softail Fat Boy Anniversary (ANV) 114 - 2018 Harley-Davidson FLFBS 1868 ABS Softail Fat Boy Anniversary (ANX) 114 - 2018.