- Experience unparalleled performance with the Dura-Ace CS-9000 Cassette Cog, designed for 11-speed systems. - The precision-engineered 12t cog in the second position enhances your gear shifting, delivering smooth transitions and optimal cadence. - Crafted from high-quality materials, this cassette cog ensures long-lasting durability, making it a reliable choice for both competitive cyclists and leisure riders. - As part of the esteemed Dura-Ace series, it promises exceptional performance, allowing you to tackle various terrains with confidence. Key Attributes: - Function: Provides smooth and efficient gear shifting for improved riding experience. - Compatibility: Tailored for 11-speed drivetrain setups, making it an ideal upgrade for your bike. - Size: Compact design that fits seamlessly into your existing cassette setup. - Material: Constructed from premium materials for enhanced strength and longevity. Use Scenarios: - Perfect for competitive cyclists seeking to maximize their performance during races or time trials. - An excellent choice for recreational riders looking to improve their bike’s shifting capabilities on long rides. - Ideal for mountain biking enthusiasts who require reliable gear transitions on challenging trails. Upgrade your cycling experience with the Dura-Ace CS-9000 Cassette Cog, where precision meets durability for the ultimate ride.