Onyx Racing Cog

The primary benefit of aluminum is weight reduction. By lowering rotational mass, you improve acceleration and efficiency, which is particularly noticeable for younger or lighter riders who don't put the same extreme torque loads on their drivetrain as heavier adults.

This cog is designed to fit standard Shimano-splined driver systems. It is a direct replacement for standard cogs on these hubs, but ensure your specific hub uses the standard Shimano interface before purchasing.

Yes. While aluminum is significantly lighter, it is softer than steel. It will wear down faster, especially if you are a powerful rider or frequently ride in gritty, high-torque conditions. It is best suited for racing or performance-focused setups where weight savings are the priority.

We offer this cog in 14T, 15T, 16T, 17T, 18T, and 19T options. This range allows you to fine-tune your gear ratio for specific track or racing conditions.

The anodized finish is primarily aesthetic, allowing you to customize the look of your bike. However, the anodizing process also provides a thin, hard layer that offers a slight improvement in corrosion resistance compared to raw aluminum.