Brakes help for a Motorcycle noob

So I just bought a kz1100 for 100 dollars, and I've never had a bike before so I don't really know what im doing yet. Anyway, I went to pick up the bike and when I tried to move it, I found out that the rear brake was locked up and the rear wheel wouldn't move. So I tried pushing the brake pedal and it moved slowly, I thought I was getting somewhere, but when I pushed harder the lever actually snapped off, so I'm wondering what the shaft is called that broke so that I can replace it once I actually get the bike home.

What KZ1100 is it? Year & model.
I'm guessing the Rr Br shaft broke --- the part in which the brake pedal is attached. ???

Find your bike at Partzilla.com or PowerSportsWarehouse, then look in the Brake-Pedal /Torque-Link diagram & Rear-Brake diagram.

Also, if you remove the Fr & Rr disks, they might look similar but aren't the same, so don't mix them up.

Yes that's where it broke, and it's a 1983 LTD.

Pictures?

eebbaayy searches: 43004-1022, KZ1100 brake pedal, brake pedal shaft or mount, kz 1100 rear brake, etc.

NOS part from Sweden: item # 271485461546
Kawasaki KZ Z 1100 A L1 LTD 1981-1983 Brake Pedal Torque Link 43004-1022 NOS

Used part --- there are several others: item # 231196570244
1982 Kawasaki KZ1100 KZ 1100 K392' rear brake pivot shaft