Surly Single Cassette Cog 3/32" Splined 17t MFPN=979-01-208 Easy on and off adjustable

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

chromoly rails

Recycled marine plastics

Old school classic styled 3 speed trigger shifter

Surly Single Cassette Cog 3/32" Splined 17t MFPN=979-01-208 Easy on and off adjustableSurly 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