The semi-aero Cosmic wheel is all carbon except for the rear hub.

The rear hub has one or more methods for attaching a gear to it.

Suspension: Front top rocker, rear hub with trailing arms.

The special crankset must also be paired with a rear hub that can be driven from the left side.

Chad Blount received a 25 point penalty for illegal modifications to his car's rear hubs found after the race.

The Mark I sprung rear hub was introduced in late 1947.

The 1914 Model C had a two-speed gearbox incorporated in the rear hub.

British thinking favoured epicyclic and planetary gears, concealed in the rear hub.

Another method uses an eccentric mechanism either in the bottom bracket or in the rear hub.

Typical track frames use 120mm spacing for the rear hub.