QR Code Link to This Post Harley-Davidson® Signature Series Smooth Rider Seat and Backrest - 51985-08 51985-08 The perfect combination of foam density and shape has created our most comfortable seat for long-haul touring. Both rider and passenger will be comfortable riding to Sturgis and back with wide seating area. Smooth styling. Seat features an easily removable adjustable rider backrest that folds down for easier passenger mounting. Rider backrest has a 5-position height adjustment with 1.5" range. Wide range of forward/back angle adjustment with the quick twist of the control knob. Seat width 16.0". Harley-Davidson®. Made in the USA. Fits '07-later FLSTF, FLSTFB, FLSTFBS and FLSTSB, '06-'15 FXST, FXSTB, FXSTC and FXSTS and '07-'08 FXSTSSE models. Does not fit FLSTSE models. FLSTSB models require separate purchase of Passenger Footpeg Mounting Kit P/N 50932-08 and passenger footpegs. Seat width 16.0"; passenger pillion width 14.0".https://www.harley-davidson.com/store/signature-series-rider-seat---backrest-pa-16-5198508--1This seat retails for $ 550.00, but for a quick sale I am selling it at $425.00I bought a used bike with 563 miles that had the seat, but my lady did not like how high the passenger seat sat. My loss is your gain.