Sprocket size...

Can someone tell me what the stock rear sprocket sizes are for a KZ1000 with an 18" rear tire and a LTD model with the 16" rear tire? I'm thinking they are 35T and 39T but I have a 35T on my bike with a 18" tire and am thinking it should be 39T. Anyone?

my 80 kz 1000 16" wheel comes with a 33 tooth sprocket stock

Both 18" and 16" used 33T on the rear.

Are you sure? I'm certain the 16" and 18" wheels took different size sprockets to compensate for the difference in wheel size. I am going to try to check and see if I can find out for sure.

There's only about 3/8" (+/-depending on manufacturer) difference in diameter between the two, believe it or not

Even though you would think there would be more since you're comparing a 16" and a 18".

Check the tire specs on the manufacturers websites to verify this for yourself.

The reason I'm asking is that I have a 35T sprocket on my bike and thought that might be off an LTD as that is what I started with when I put this bike together. Wonder what it came off of then? Hmmmm!

Don't get me wrong, I'm not saying they didn't have different sprockets, for the simple reason I don't have a clue

I'm just saying that you probably shouldn't base your reasoning on there being a big difference in diameters between a 130/90/16 and a 120/90/18, because there isn't.

My first 750 twin arrived with a 16" rear wheel, upon discovering that a 18" was stock I decided maybe I could cut down my engine cruise rpm (and make the bike look better) if I swapped it back to a 18" wheel. When I started checking tire specs I discovered that it was pretty much a waste of time to convert it because there was so little difference in tire diameter. Then I discovered they were Morris Mags and not real common so I threw that idea out the window

racer54 wrote:

The reason I'm asking is that I have a 35T sprocket on my bike and thought that might be off an LTD as that is what I started with when I put this bike together. Wonder what it came off of then? Hmmmm!

If oem rear sprocket was 33 teeth, am guessing somebody along the line simply opted to replace it with a 35 tooth version. Probably are several different size rear sprockets still available for this model.

Good Luck!

Thanks guys. Just for general knowledge, a guy on another site said that the LTD, which came with 16" wheel, was stock at 33T and standard model with 18" wheels came stock with a 35T. For what it's worth. Whatever it's supposed to be, I'll just play with what I have and go. Was just curious.

Just for grins I looked it up at kawasaki.com

77-78 B1/B2 42041-1010 REAR SPROCKET,33T
77-78 A1/A2 42041-1010 REAR SPROCKET,33T


79-80 B3/B4 42041-1010 REAR SPROCKET,33T
79-80 A3/A4 42041-1032 REAR SPROCKET,35T


So it looks like the people that told you that the A and B sprockets were different were right, If they were talking about the A3/A4, but not the A1/A2.

According to kawasaki.com

And again, I don't have a dog in this hunt (always thought that expression was cool though), as I don't have any 1000's