NEW Problem Solvers Singlespeed Cog 21t fits Problem Solvers Carrier or 6-bolt hubs height_5ft-08in widely spaced knobs suitable for

widely spaced knobs suitable for all conditions

Polished alloy cups

Compatible with V brake and mechanical disc

SM : 5'3" - 5'9"

With no magnets or other exposed parts to line up

NEW Problem Solvers Singlespeed Cog 21t fits Problem Solvers Carrier or 6-bolt hubs height_5ft-08in widely spaced knobs suitable forProblem 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 Defined Color: Silver Material: Steel Drivetrain Speeds: 1