- 0039 rear wheel hub designed to fit with VLR Emerald chassis, but will fit most 40mm kart axles.
- Black, anodized finish.
- Available in multiple widths: 40mm ID x 75mm length, 40mm ID x 77mm length, 40mm ID x 77mm length.
- 40mm ID x 77mm Length is sold as a pair, and is the standard hub set that comes with the VLR Emerald kart (V00042).
- 3/58 bolt pattern.