You've got to have the right ratio for the track, and Shimano's Dura-Ace cogs come in a range of tooth counts so you can always be prepared. Manufactured from durable chromoly steel, each cog is machined to run perfectly straight.
1.37" x 24 tpi
|Silver / 13T / 3/32-inch||689228170087||Y27913000||SHI371123220|
|Silver / 14T / 3/32-inch||689228170100||Y27914000||SHI376714830|
|Silver / 16T / 1/8-inch||689228170155||Y27916100||SHI294479588|