Surly Single Cassette Cog 3/32" Splined 17t MFPN=214310 } Includes tape

} Includes tape

The 12-tooth X-SYNC pulley wheel holds the chain in place reducing bounce and chain slap

Mounting kit included

note: the rim-brake image is shown

Surly Single Cassette Cog 3/32" Splined 17t MFPN=214310 } Includes tapeSurly 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