The FSA OS-99 CSI Carbon 6 Degree Stem is the ultimate choice for any cyclist seeking a high-performance stem that provides maximum stiffness and lightweight. The stem's 3K carbon fiber construction provides an unbeatable combination of strength and durability, ensuring optimal power transfer and control. The OS-99 CSI Carbon 6 Degree Stem features a 6-degree angle that allows for a comfortable and aggressive riding position, making it the perfect choice for any road or mountain bike. The stem also includes a titanium bolt package, making it even lighter and stronger. The stem's design also features a four-bolt clamp that provides maximum stability and security, ensuring your handlebars stay in place during the toughest rides. The OS-99 CSI Carbon 6 Degree Stem is compatible with a range of handlebars and forks, making it an ideal choice for any bike build or upgrade. Overall, the FSA OS-99 CSI Carbon 6 Degree Stem is a must-have for any cyclist seeking style, performance, and durab