Retrogression cro-mo track cog

Retrogression Verified independent store

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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. ⓘ All track cogs ha ve 1.37"x24tpi threading. 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 Show more