Problem Solvers Singlespeed Cog 17t fits Problem Solvers Carrier or 6-bolt hubs FW9901

Problem Solvers Singlespeed 6-bolt Cogs are designed to be used with the Problem Solvers Cog Carrier.

• 30g
• Compatible with 3/32" and 1/8" chains
• Cog is also 6-bolt rotor mount compatible for fixed gear use (see instructions for applicable warnings)