NEW Surly Cogs Driver and Single Cog Surly Single Cassette Cog 3/32" Splined 20t fork-type_rigid Tire Type: Solid

Tire Type: Solid

Wireless electronic eTap shift logic for intuitive shifting

Tuo can be managed via the My E-Training software (12-month free subscription) or other indoor cycling services (which usually require paid subscription)

Resistance unit roller allows for 700c

Features Shimano HG-EV technology for gear combination and cadence management

NEW Surly Cogs Driver and Single Cog Surly Single Cassette Cog 3/32" Splined 20t fork-type_rigid Tire Type: SolidSurly 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: 20 Cassette Body Type: Shimano 7 Speed Material: Steel Drivetrain Speeds: Single Speed 3 32"