Shimano Alfine accessoy set with non-tun washes 8/8L - fo Alfine 11-speed intenal gea hub SG-S700, in fame with vetical dopouts The ergonomic design and front-to-back movement allow you to find the perfect position to support your back and reduce fatigue How to lock raise the backrest ? Documentation and Video Installation Instructions Provided How to lock the backrest ? Does not fit Trike models. The rider backrest is compatible with Harley 2009-2025 Touring Model Street Glide Road Glide Road King Electra Glide(except '21-later FLH, '23-later FLHFB, '24 FLHXSE, FLTRXSE and FLTRXSTSE). C.C. RIDER Rider Backrest 2 Up Seat Driver Backrest Pad For Harley Motorcycle Back Rest Rider Adjustable Backrest W/ Mounting Kit Fit For Harley Touring 2025 Road Glide Accessories FitmentFit For '09-later Touring models (except '21-later FLH, '23-later FLHFB, '24 FLHXSE, FLTRXSE and FLTRXSTSE). Does not fit '23-later Touring models not equipped with 1pc 2up seat and '24-later heated and cooled seat. Package Includes 1 set of Driver Backrest+Installation Instruction,we highly recommend you to ask for professional installation for the backrest Buy Detachable Rider Driver Backrest For Harley... The Backrest can be adjust to the angle as the Rider like,Easily throught a Cable Connected to the Hydraulic Rod,Provide extra comfort and support for you while driving Material:PU Leather+Heavy Duty Metal Bracket The angle of the backrest can be slightly adjusted forward or backward, and the height of the backrest can also be adjusted.