Givi MonoLock top case mounting hardware for Yamaha Majesty 400 (was installed on '05, fits 05-08, probably other years too). Brand new mounting plate with used base plate and all necessary hardware. Installs in minutes, no cutting or drilling required. Free installation with the asking price. Very similar to the posting below Top case not included (I don't have it any more).

https://www.amazon.ca/E331M-Monolock-Yamaha-Majesty-2004-15/dp/B00721A0F0