You may have to as I did and find some online microfiche for the bike you're working on. That way you can see if the part you want is available or if has been discontinued. Suzuki is pretty quick to stop keeping parts for past models.
Most of the Japanese manufacturers maintain their inventories for 15 years. After that, they don't replenish their stock. Once a part is gone, it's gone for good. Obviously faster moving parts that fail often will run out quicker. Some parts can stick around for another 10 years.
Since your Suzuki is 16 years old, most if not all of the parts are probably still available.
No, I havent gotten it yet. But I got to thinking last night I wonder if the dealers even sale parts for these things anymore. I want to go and tune it all up, change all the fluids etc. It still has the original brake pads on it. They feel very stiff, I need to flush the brake fluid and lube the slides real good. But what if I need a new side cover gasket? A new Clutch cable?
Toyo, As I have had to find parts for older Hondas I can tell you this. There is usually someone out there who has some. My searches have been for older Hondas so I cannot tell you about Suzukis. The first place to always look is the dealer. If anyone who has bought up suprlus parts has it they usually get a little more for the parts.
Also you might be amazed how many parts are available for the bike on Ebay. By using the model number and the actual model?number that Suzuki used will give you different finds each time you put it in.
For instance... Honda CB750 or Honda cb750 or CB 750 or cb 750
I have found that you will have much better luck with parts for old bikes at dealers if you hunt the part number down for the part needed and just take the number in and ask if they can get it. If you go in and ask for a specific part for any bike over 10 years old, most likely you will get an answer like.. we don't mess with bikes that old or we don't have books for old bikes anymore. I have yet to be told "we can't get that" when just armed with a part number, however I often hear "I didn't know we could still get stuff like that."