GrindKing
With deep roots in the Venice and Dogtown culture, GrindKing was founded in 1988 by Donald Cassel.
Donald invented the high-performance inverted kingpin that was designed to improve how skate trucks grind.
Because this invention was a “Grinding Kingpin” he shortened the name to “GrindKing.” Soon after that, Donald invented other successful skate hardware products and in 1990 came out with the first GrindKing truck. Since then he has established GrindKing as the leader in skate truck and hardware innovations.
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