Watch out for some aftermarket dirtbike levers. They often don't have the little cam gizmo that actuates the brake light and clutch safety switches, nor do they have a means of adding a switch.
Nothing worse than buying high rent adjustable levers and finding out you've lost your brake lights.
A lot of the stock type YZ direct replacement levers will fit our perches, but again make sure they have the switch engagement cams.
A set of decent hand guards solves the broken lever problem permanently and for a lot less munny.