Speedline Cogs

Speedline rear cogs are matched to the Speedline Chainrings for maximum performance. Available in Aluminum and Cro-mo they have a built in spacer and come stock with additional spacers to fine tune your chainline. They work with all Shimano compatible Spline hubs. Aluminum is only recommended for riders under 130lbs. Stock sizes are 13t, 14t, 15t, 16t, 17t, and 18t