Gates Carbon Drive CDX CenterTrack Thread-On Fixie Rear Sprocket - 21t Compatible ISO Fixed Cog Threading Silver ModelNumber=E4492 -02 includes twin speed drive

-02 includes twin speed drive CO2 head

Tool may be stamped with "for use with 11 speed chains only" but works with 12 speed chains

6 upper/lower upper stack 6mm color blue weight 32g

Classic Rogue Large Pad Design

Gates Carbon Drive CDX CenterTrack Thread-On Fixie Rear Sprocket - 21t Compatible ISO Fixed Cog Threading Silver ModelNumber=E4492 -02 includes twin speed driveGates CDX Thread On Fixie rear sprocket are crafted from stainless steel making them durable enough for global trekking competitive racing or rugged off roading. Thread on Fixie mounting style Stainless steel construction 11mm pitch CDX CenterTrack belts cogs and rings do not interchange with any part of a CDC CDX MudPort system Tooth Count 21