Enhance your mountain biking or gravel riding experience with this exclusive Shimano XT/XTR 11-Speed Cassette Cog Bundle. Designed for superior performance, durability, and precise gear shifts, this bundle features two high-quality steel cassette cogs compatible with Shimano HG 11-speed drivetrain systems. This versatile cassette cog set includes a 13-tooth and an 11-tooth steel ramped cogs, perfect for customizing your gear ratios to optimize climbing ability and top-end speed. Crafted from hardened steel, these cogs resist wear and corrosion, ensuring long-lasting performance on rugged trails or demanding terrains. The engineering behind Shimanos advanced ramped tooth design promotes smooth, silent shifting, improving overall drivetrain efficiency. Ideal for mountain bikers, gravel riders, and endurance enthusiasts, these replacement cogs are engineered for seamless compatibility with Shimano XT M8000 and M9000 series 11-speed cassettes with Shimano HG body compatibility. Whether upgrading your existing drivetrain or customizing gear ratios for specific riding styles, these components deliver reliable engagement and crisp shifting response. Upgrade your bikes drivetrain with these precision-engineered, durable Shimano cassette cogs designed to withstand aggressive riding conditions while maintaining a sleek, professional appearance. Optimize your cycling setup today with this essential cassette cog bundle for peak performance and longevity.