Originally Posted By: jeff78
It will be tough finding the actual bypass numbers (or any other hard data, really) for OEM filters. If the Kawasaki filter you have is part number 16097-0008 (used on most modern Kawis with spin-ons), then it's basically the same filter as used on most other Japanese bikes using spin-on filters, and they all cross-reference to the same aftermarket filters. Bypass values typically range from 9-13 psid.
Is your FU a 6607/7317? I'd use it without hesitation assuming it's the correct fit.*
* - Note that Fram's cross-reference would actually be to PH6017A for motorcycle applications. But the XG6607/7317 has the same dimensions, thread size, etc, so will fit correctly.
I bought an Ultra XG7317 for the next oil change on my Yamaha XSR900. As you pointed out, it looks like a better replacement for the PH6017A motorcycle filter, and has the same bypass valve setting, etc. The XG7317 should have very low delta-p on a motorcycle engine.
The XG7317 is about 0.8 inch longer than the PH6017A or OEM filter, but will still fit with good clearance on the XSR900. Be sure you have the space for the slightly longer XG7317.