PKT's 40mm x 35mm shorty hubs. These hubs are designed especially for the LO206 karts with 40mm axles. The hubs free the kart up and let the axle do its work. They are designed with a single 8mm bolt to provide superior clamping with no lateral movement. We also added dual 6mm set screws to keep the 8mm key in its place, again ensuring no lateral movement. As always 8mm zinc plated series 4100 wheel studs on a 52mm metric bolt pattern. Finished in black anodize with laser engraving. Plastic wheel register not included.