Surly Single Cassette Cog 3/32" Splined 17t MFPN=979-01-208 The vibration damping of the

The vibration damping of the new composite frame is exceptional

Race Face 30mm

Easy on and off adjustable seat post strap mount with quick release tab

Bracket No Primary Color Black Lock Type Key Internal Lock Size Imperial 2

Surly Single Cassette Cog 3/32" Splined 17t MFPN=979-01-208 The vibration damping of theSurly 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