Surly Single Cassette Cog 3/32" Splined 17t Offset-57 Security Rating 5/10

Security Rating 5/10

Careful engineering has resulted in crankarms that optimize stiffness to weight ratio with material only where it’s needed8-bolt interface compatible with power and non-power AXS spiders and integrated chainrings (Chainring and spider sold separately)

Easy setting and saving of the default value

Equipped with Basil`s Universal UBS system and compatible with all rack types

Patented 2-in-1 clip-on or strap mount options

Surly Single Cassette Cog 3/32" Splined 17t Offset-57 Security Rating 5/10Surly 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 17 Cassette Body Type Shimano HG 7 Speed Drivetrain Speeds Single Speed 3 32" Material Steel