Swingarm Pivot Bolt / nut

[MIA450R]

Guys-
What's the size of the larger nut on the swingarm pivot bolt? 21mm? 22mm?

Does the rear brake have to be removed to get to it, or will removing the spring provide enough clearance??

thanks
mia

I use a 7/8th socket. That would be 22mm. You don't need to remove anything else.