Surly Single Cassette Cog 3/32" Splined 17t Offset-57 Model Classic 1 Headset S

Model Classic 1 Headset S

The core supports the natural movement of the hips and dampens the effect of constant bumps Gender/Age Men's Color Black/Gray Rail Material Steel Saddle Cut Out No Material Synthetic Defined Color Black Clamp Style Std Rails

Its revolutionary tread design features a fast-rolling alternating center ribbon for maximum efficiency while the signature Vittoria V-formation channels away debris to maintain relentless traction

Unique cylinder offers optimum resistance to picking and reinforced sleeve over crossbar for additional security

Easy setting and saving of the default value

Surly Single Cassette Cog 3/32" Splined 17t Offset-57 Model Classic 1 Headset SSurly 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