These polished and chrome plated uprights are designed to be used with the Quick Release Backrest Sidearms (sold separately). Available in Short (same as standard Silverado, as shown here) and Tall (+3 ) heights. Compatible with Deluxe and Custom Backrest pads, also sold separately: Custom Plain (STR-5GA41-50-00) Custom Standard (STR-5GA41-50-02) and Deluxe (STR-5GA41-50-01)