Surly's sprocket was designed for single speed first and foremost, but it's a bit more versatile for Surly to be Surly.
The base cog is 4.35mm wide and can be stacked several to create a simplified multi-speed drivetrain. In that case, use a 9-speed derailleur.
- Machining from SCM415 chromoly steel
- Heat treatment and chrome plating
- Compatible with 6-9 speed 3/32 "chains
- 13t to 22t is set