This is the "500EX Hex Hub" the bore is a 1/2" Hex Hole. It is a slightly different version of the 500 Hex Hub. It is manufactured differently, as it is extruded. Also, there is a 1.124" diameter boss on each side of the hub flange, providing a location for 1.125" bore flat sprockets. Are you having a hard time keeping your sprocket concentric with your hub? This hub is the trick.
This is the hub featured in the 2014 and 2015 Kit of Parts Drive Chassis and fits all AndyMark wheels.
- Material: 6063 Aluminum
- Bore: 1/2" Hex
- Bolt Pattern: 0.204" diameter holes, evenly spaced on a 1.875" diameter bolt circle
- Outside diameter: 2.25"
- Weight: .088
This part is designed and made in Indiana, USA.