Offset adapter bracket only. Allows positioning the rider backrest pad 2" (5.1cm) further backwards on solo seats that come equipped with a rider backrest unit. Replaces the standard rider backrest post in all Mustang solo seats that have the built-in rider backrest unit. It has all the features of our standard rider backrest but allows the rider to lean 2" (5.1cm) further back. Note: Mustang does not recommend this offset post for passenger seat or FL rider backrest kits. Note: This is only the bottom portion of a complete backrest post. Using this part requires that you already have a Mustang backrest with a post.