Need a master cylinder reservoir

There is a good chance that I need a new master cylinder reservoir for my KZ550. My question is, could I use one from another bike like maybe a honda, or yamaha, or do I have to get one for the KZ? There seems to be ton for other bikes that have smaller ones that look quite a bit better, and are quite a bit cheaper. I was just wondering, I might not need one at all. I will find out for sure by the weekend. Thanks.

You should be able to use just about any one that you can make work. Just make sure it is cleaned thoroughly of any fluid before you use it.

You can use one from just about any Japanese bike.
Make sure it's for a single disk.