Surly Single Cassette Cog

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Color: Silver
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Surly Single Cassette Cogs are designed first and foremost for single-speed riding, but they can also be stacked to create a simplified multispeed drivetrain.

  • Features

    • At the base, each cog is 4.35 mm wide, which allows you to stack a few of them up for a simplified multispeed drivetrain—use a 9-speed derailleur if you do that
    • Multigear use will result in slower, less-crisp shifting than cogs designed for multigear systems
    • Machined from SCM415 chromoly steel; heat-treated and chrome-plated for strength and durability
    • Cogs work with 6- to 9-speed, 3/32 in. chains
    • Compatible freehub: Shimano Hyperglide (HG)


    View all Surly Bike Cassettes
  • Technical Specs

    Best Use



    Chromoly steel


    Single Speed

    Compatible Freehub

    Shimano Hyperglide (HG)


    13 T: 25 grams

    14 T: 30 grams

    15 T: 39 grams

    16 T: 48 grams

    17 T: 52 grams

    18 T: 59 grams

    19 T: 70 grams

    20 T: 76 grams

    22 T: Unavailable grams

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