Problem Solvers Singlespeed Cog 21t fits Problem Solvers Carrier or 6-bolt hubs

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

• 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)

• Tooth Count: 21
• Cassette Body Type: Single Cog Driver
• Drivetrain Speeds: Single
• Material: Steel
• Defined Color: Silver