It had one originally. the Stock brake lever has a metal "clip" that you can flip down to catch in a slot in the perch. Your's has probably been replaced with a generic aftermarket lever and perch when someone broke them.
Order the OEM setup from servicehonda, and you will have what you want.
I have used just about anything that is handy before too. Cary a little stick of the right size in your pocket lol
ATCnut
82 185s - sold
83 200x (hopped up)
84 200x (stock)
84 70 (lost this one to the DMV)
85 70 (soon to have lights, a foot brake, and CDI ignition)
84 200es (parts trike) - sold
85 350X (the best)
85 350X (siezed motor, dream of a poweroll kit someday)
85 250sx (frame was trash, got parted out)
86 250sx (the tractor)
86 250sx (a nicer tractor)
86 250sx (an even nicer tractor)
87 200x (parts trike, its really rough, a dog was chewing on it for a while)
87 250es Big Red (the tank!!)