Surly Single Cassette Cog 3/32" Splined 15t MFPN=BX-NP13000SM-RD and bikes with any size

and bikes with any size of frame bag

Limiting these vibrations massively reduces hand and arm fatigue leaving you feeling fresh with more control

Really good in newer cold snow and at lower humidity

Made in Europe the compact design offers a comfortable riding experience: road shock and vibrations are fully damped numbness of the male soft tissue area is alleviated and sit bone pressure is significantly reduced – allowing you to be fully in sync with your bike whatever your chosen path

Surly Single Cassette Cog 3/32" Splined 15t MFPN=BX-NP13000SM-RD and bikes with any sizeSurly 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 15 Cassette Body Type Shimano HG 7 Speed Drivetrain Speeds Single Speed 3 32" Material Steel