This auction is for a Suspa Locking Gas Spring for use in Harley Davidson Adjustable Rider Backrest Mounts. These are made by Suspa for Harley-Davidson for use in the Genuine Harley Davidson Adjustable Rider Backrest Mounts (52596-09A, 52593-09A and 54099-10). Brand new. No hardware or additional components included. See photos.