Hello,
I purchased the M18 kit about 6 years ago for my KZ650. I recently purchased another KZ650 and cannot figure out who I bought this kit from? Has anyone replied to this thread to advise where this fitting kit can be purchased? Desperate and in need, again!
BTW. I installed a 93 ZR1100 (full sized) external cooler with this M18 fitting kit. I have roughly 12k miles on this set up, and this bike is my daily driver. I also installed an Off The Shelf Temp Gauge that is commonly mounted in the Oil Filler Hole. I expected that this Oil Cooling solution would bring down the typical operating temperature. I can say that this was not the case. So, the before and after operating temps are the same. The benefit has been that there is an additional ~1 qt of oil in the system. This means the oil is not quite as spent/degraded and I can run longer between oil changes.
I understand there are several different ways to plumb the system. I did not do a deep comparative dive to test multiple setups. It's possible that there is a more efficient way to route the oil to actually reduce oil temp, but I am content with this set up.
Your comments are greatly encouraged and appreciated.