Our cogs are CNC machined from hardened chromoly steel with a smooth, durable black oxide coating, and slotted cutouts for weight savings on sizes 17t & larger.

FYI: All track cogs have 1.37″x24tpi threading. ALL OF THEM. Any threaded cog can be used on any threaded track hub.

specifications

1/2″ x 1/8″

standard 1.37″x24tpi threading

sizes: 14t-23t

color: black