Retrogression cro-mo track cog

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.

• 1/2" x 1/8"

• standard 1.37"x24tpi threading

• sizes: 14t-22t

• color: black