Surly Single Cassette Cog 3/32" Splined 13t MFPN=H35PTCDRR28SA8949S 1 1/4"–1 1/2" eccentric carbon

1 1/4"–1 1/2" eccentric carbon steerer

Image is representative only

We made the inserts out of steel for extra strength and durability

durability and absence of noise

Surly Single Cassette Cog 3/32" Splined 13t MFPN=H35PTCDRR28SA8949S 1 1/4"–1 1/2" eccentric carbonSurly 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 13 Cassette Body Type Shimano HG 7 Speed Drivetrain Speeds Single Speed 3 32" Material Steel