EXCESS COG Product Overview The Excess Cog is a steel cassette cog designed for Shimano-compatible freewheels. Available in tooth counts from 12T to 18T, it provides a direct replacement cog for BMX racing drivetrains using Shimano cassette hubs. Key Features Steel construction – Durable material resists wear under high torque loads and extends service life compared to aluminum cogs Shimano cassette compatible – Designed to fit Shimano freehub bodies with the standard cassette spline interface Multiple tooth count options – Available from 12T to 18T for different gearing preferences and ratio adjustments Technical Specifications Material: Steel Hub Compatibility: Shimano cassette Tooth Count Options: 12T, 13T, 14T, 15T, 16T, 17T, 18T Compatibility and Ideal Use Cases This cog is compatible with BMX hubs using Shimano cassette freehub bodies. Not compatible with freewheel hubs, single-speed fixed threading, or non-Shimano cassette systems (SRAM XD, Campagnolo, etc.). Works with standard BMX chains. Ideal for racers who need a replacement cog or want to change gearing ratios. Lower tooth counts (12T–13T) provide quicker acceleration and easier pedaling, while higher counts (16T–18T) offer more top-end speed. Steel construction makes this cog suitable for high-power applications and riders who prioritize durability over minimal weight savings. **Due to unique nature of this item, ALL sales of this product are FINAL. No Refunds or Returns**
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