Replacement Rear Sprocket

My '77 KZ-1000A1 currently has an after market 32 tooth rear sprocket on it with a 15 tooth front. I would like to install a 33 tooth rear which is what is shown in the Kawasaki parts manual. Can anyone suggest a good source or manufacturer for rear sprockets? Are there any to avoid? OEM rear sprockets are almost impossible to find and are quite expensive compared to other replacements. There is one on Fleabay that is reported to be OEM but the seller is asking almost $100.00 for it. Thanks in advance for any help on this...
Rick H.

P.S. To the mods, I wasn't sure where to post this question, so I listed it in the "chassis" area. If it's in the wrong spot I apologize.

Z1Enterprises.com probably lists a JT Sprocket for your motorcycle. Also, I'd guess that Sunstar sprockets listed on EB are a good option as the ones I've see are made in Japan.

I bought my replacements from Z1 a few years ago.


They look slightly different from the original OEM I removed, but seem to be holding up ok.


Matched up.



The front sprocket holes were smaller, so I had to modify the nut locking tabs to fit.

These guys sprocketspecialists.com/ are local to me & I've had great service & parts from them.

Thank you gentlemen...
Rick H.

old_kaw wrote: I bought my replacements from Z1 a few years ago. .................

The front sprocket holes were smaller, so I had to modify the nut locking tabs to fit.

The wear on the surface that counter sprocket reminded me of the wear on my original counter sprocket (see image below) although mine was probably worse. On my KZ650-C1 I found that the chain adjusters were mounted on the wrong sides. The two chain adjusters on the KZ650-C1 are different than each other in that one has a washer permanently attached to it, and if that adjuster is mounted on the wrong side the rear wheel is shifted slightly to one side.

This may not be the case with the KZ1000 models, but for anyone with a KZ650-C1 who reads this it’s worth noting. Ed

ONE SIDE


OTHER SIDE


RIGHT SIDE ADJUSTER


LEFT SIDE ADJUSTER

Rick, are you running a 630 chain?

Sorry, I thought I had mentioned it, yes, I am running the 630 chain.

Rick H.

Z1 Enterprises sells a 33 tooth 630 pitch sprocket. I have no info on it but I've used Z1E many times and never had bad product from them.

www.z1enterprises.com/630-jtr501-series-33t-rr-sprocket.html

Z1 slack adjusters have fixed washers on both sides. They can be switched from side to side but they need to go in right side up so that the adjusting mark is next to the swingarm.

650ed wrote: The wear on the surface that counter sprocket reminded me of the wear on my original counter sprocket (see image below) although mine was probably worse. On my KZ650-C1 I found that the chain adjusters were mounted on the wrong sides. The two chain adjusters on the KZ650-C1 are different than each other in that one has a washer permanently attached to it, and if that adjuster is mounted on the wrong side the rear wheel is shifted slightly to one side.

This may not be the case with the KZ1000 models, but for anyone with a KZ650-C1 who reads this it’s worth noting. Ed

ONE SIDE

OTHER SIDE

RIGHT SIDE ADJUSTER

LEFT SIDE ADJUSTER

Wow ed, thems some worn out stuff. You must be pumpin sum hella HP to that gear. :woohoo:

Seriously, I can't imagine what looks to be ~.065" - .125" offset to cause much side wear, but stranger things have happened.

I haven't looked into it for Kz's yet, but apparently some company is making two-piece sprockets now. The sprocket is made of aluminum, but there is an outer ring made of steel. So it's lightweight for better performance and the steel teeth give durability.


www.denniskirk.com/moose/51-tooth-red-du...zHUINeQaAucvEALw_wcB

Haven't found a link for a Kz yet. Maybe it's only for lower-power motors.