Disconnecting Sway Bars?!?!

i have an ’09 800 50" pink edition…… yes….. pink…… so yes it has sway bars front and rear and i have recently installed the high lifter yellow springs for more capacity since i am a big guy. my question is that since the sway bars utilize the same bolt as the lower shock mounts, what size bolt do i need to replace it with? i know the length i need but what i need is the diameter of the bolt.. i do not have a local hardware store in my little town to compare it with, so i have to order them online. i do mostly slow going rocky trails so i need to get rid of these sway bars. Please help..