Zebrafive
Super Member
IIRC it was the foam ring (red arrow) between the two parts (red dots) allowing dirt to enter the engine.
I think the suggested cure was to replace the foam with a sealant.
Kawasaki may have changed the foam ring in your 2021. I have a 2018 FXR
I think the suggested cure was to replace the foam with a sealant.
Kawasaki may have changed the foam ring in your 2021. I have a 2018 FXR