Surly Single Cog 3/32 Spline

Product Code 20055844
Other products by Surly
  Options Price RRP In
15t $72.00 $75.00
16t $72.00 $75.00
17t $72.00 $75.00
18t $72.00 $75.00
19t $72.00 $75.00
20t $72.00 $75.00
21t $72.00 $75.00
22t $72.00 $75.00
Price may differ in our Retail store.

  • In-store: Expect delivery in 2-3 days.
  • With Supplier: Expect delivery in 4-7 days.


Our cassette-type cogs are designed to fit on standard Shimano compatible freehub bodies.

Key Features
  • tall tooth profile that is essential for preventing chain skip from the extra torque a singlespeed drivetrain encounters
  • cog base width (where it contacts the freehub body) is 4.35mm, so you can stack a few of them up and use a 9-speed shifter for a simplified multi-speed drivetrain
  • width also prevents it from ruining the freehub body as a result of digging grooves into it like skinny stamped cogs have a tendency to do
  • machined from SCM415 CroMoly steel, then heat-treated for toughness and chrome-plated for surface hardening and enhanced chain lubricity
  • works with 6-9-speed 3/32" chains, although we recommend the inherently updated quality of an 8 or 9 speed chain