specialized giant cube cannondale Mavic Castelli endura altura
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  • Product Description

    Halo Fixed Gear Track Cogs are precision CNC machined cogs from heat treated cro-mo steel.

    Note: General Fixed cog check: for correct fixed use, the fixed cog should NEVER move on the hub when pedal force is applied in both directions. i.e. if the cog moves, then something is wrong. Continued use with a fixed cog that moves will result in damage to the hub.