https://www.avient.com/sites/default/files/2024-12/PKE grades for Powersports Application Bulletin.pdf
It has good tensile, thermal, flex, and impact properties like nylon (PA) while maintaining excellent wear and chemical resistance.
While PK and PA are both semi- crystalline and contain an abundance of carbon and oxygen, polyketone lacks the nitrogen present in the amide bond of the nylon backbone.