BS38 Main jets

Well here is my story. I bought a 77" KZ750B as a project bike. Side note: The bike is a 12/77 and some of the parts are found of the 78' B's like the forks and a combined regulator/rectifier, but anyways I wanted to run pods on the carbs. I read and researched every place imaginable and was coming up empty on finding main jets for the BS38's. I wasn't interested and upgrading carbs so I did a little more digging and found that the mains used in the BS38's are still used today by Mukini in other carburetors with even the same part numbers. The BS38 mains are part number N100.606 (Mukini number) and Kawasaki number is (92063-143) (125#). The jets are also used in watercraft jet ski carbs and others called "slow jets". I ordered several different sized "slow jets" to jet my pods and they worked like a charm. The are the exact same as the original because they are the same. I put 135# in them with pods and runs good so far. Just thought I would share and see if that helps anyone in the future if you are looking for mains on a KZ750B. Good luck!

This place lists the BS-38 main jets:

www.allensperformance.co.uk/mikjets.html

fourth item down

If you don't find them at his site try z1enterprises.com
If you know what different kinds are compatible I'm almost positive they will have them.
It's just a bit of a pain to sort through their items.

Best of luck!