CONCORD, NC - WKA Officials have recently clarified that the Thru Bolt Hub Locking System, which is used for the Hollow Shaft, is not acceptable with the solid 5/8 shaft system.

For competitors who run WKA National Classes, please refer to the rule that pertains to your series below for further clarification:

Gold Cup: 254.2.1

Road Race Laydown: 304.2.1

Road Race Sprint: 354.2.1

Speedway Dirt: 404.2.1

Speedway Pavement: 454.2.1