Shimano
Dura-Ace 1/8" Track Cog

Track teeth.

When you need every watt to go into the wheels, no name is as trustworthy as Dura-Ace. Their track cog threads onto standard 1.37" x 24 TPI track hubs and is available in multiple sizes to give you the right gear for the job.

NJS approved. Compatible with 1/2" x 1/8" chains.

B-Stock - This product has one or more B-Stock units available. These units can be purchased at a discount (see option select). B-Stock units were returned from other customers and may have missing or damaged packaging materials. These units are otherwise as new. The full manufacturer warranty applies. Click Here for more information.