Surly Single Cassette Cog 3/32" Splined 13t MFPN=96521 and clean chainline

and clean chainline

}TruVativ STYLO 6K Aluminum Eagle Boost Crankset - 175mm 12-Speed 32t Direct Mount DUB Spindle Interface Black

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ANT+ connectivity and BLUETOOTH Low Energy technology let you sync to Garmin Connect and other training apps

Surly Single Cassette Cog 3/32" Splined 13t MFPN=96521 and clean chainlineSurly Single Speed Cogs. Designed as a singlespeed cog but may also be stacked and used with 9 speed shifter. Multi gear use will result in slower less crisp shifting than cogs designed for multi gear systems Fit Shimano freehub splines SCM 415 hardened chromoly steel Photo for color and material reference only Tooth Count 13 Cassette Body Type Shimano HG 7 Speed Drivetrain Speeds Single Speed 3 32" Material Steel