Legs : 10%
Helm : 10%
Back : 5%
(Old chest 1-80) 10%
(Old shoulders 1-80) 10%
(Guild bonus fast track rank 2) 10%
(Yeah right , BoA ring from fishing) 5%
This means you could be as high as 60% extra xp till 81 , but realistically 55% because nobody has the ring , and 45% if guildless , so pretty massive