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.
|Option||Barcode||Manufacturer's Part Number||Store SKU|
|13T / 1/8-inch||689228170094||Y27913100|
|14T / 1/8-inch||689228170117||Y27914100|
|15T / 1/8-inch||689228170131||Y27915100||19393|
|15T / 3/32-inch||689228170124||Y27915000||19392|
|16T / 1/8-inch||689228170155||Y27916100||11507|