The Givi E131S Backrest Pad is designed to fit a variety of Givi top cases and mounts using the included studs and nuts. Installation requires minor drilling of the top case using the supplied paper template. Passenger comfort results may vary based on motorcycle profile, passenger size, and top case positioning. For use with these Top Cases: V40N V40NT B37 B37NT B47N B47NT B360N B360NT B34N B34NT Note: Top case sold separately.