Where to buy secondary main jet Kz750 n1 spectre?

I'm looking for a secondary main jet (x4) for a KZ750 Spectre N1 equipped with Keihin cv34s. I'm looking for number 90. I found 2 websites that claim to have it but the part numbers are different? The first one is Z1 industries and the second is Partzilla. Could someone confirm which is the correct part number? Here are both the links:
www.partzilla.com/product/kawasaki/92063-1003
www.z1enterprises.com/main-jet-keihin-99...20750%20SPECTRE/1982
 

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Hi again Nessism

My only concern is that the part numbers are different

P/N from Partzilla: 92063-1003
P/N from Z1: 99101-393

This probably doesn't matter right?

The Z1Ent part numbers seem to be the Honda part numbers. 

Here's a #90 Honda main jet listed at partzilla. Looks the same as the Spectre jet.
www.partzilla.com/product/honda/99101-393-0900  

Forgive me but does this mean they are the same? Did Honda use the CV34?

Bump?

Honda and Kawasaki don't share the same part numbers, even if the parts are the same.  

That's how it seems to me, I was really wondering why they would have a P/N discrepancy but I can probably assume that Z1 has the correct part. I suppose I could email them and inquire

There is no part number discrepancy.  99101-393-xxx is the Keihin part number for the secondary main jets.  Lots of different bikes use these.  Z1 can't be held responsible to cross reference every part they sell back to the OEM part numbers, especially common parts like jets.  If it makes you feel better, you can always buy the parts from a Kawasaki dealership source.  They show as still available.

And no disrespect, but if you really want to make sure your carbs will run properly, you must ungang the set, and deep clean all the internal passages.  When done, reassemble with all new O-rings.  That's what really matters.  The O-rings in the fuel tee and interconnection tubes are almost always hard and brittle on these 40 year old CV34's, and the only way to change them is a full breakdown.

 

Thank you for the clarification Nessism you've been a great help again. Being somewhat obscure bikes I always second guess buying parts for my KZ. But also I am new to Kawasakis, working in the automotive industry things seem a lot more straight cut. And no disrespect is taken, I appreciate all advice given to me as I am still learning the ins and outs of these bikes.