- Specifications: This 9-speed cassette features an impressive 11-40T gear range with gears sized at 11-13-16-20-24-28-32-36-40T, making it versatile for various terrains and cycling styles. - High-Strength Material: Constructed from premium high-strength steel with a nickel-plated finish, this cassette offers exceptional corrosion resistance. It is engineered for durability, making it a long-lasting choice for multi-speed bikes. - Precision Engineering: The high-precision internal threading guarantees a secure connection to your bike hub, ensuring smooth rotation and hassle-free maintenance. The innovative hollow technology reduces weight to 570 g without sacrificing stiffness, enhancing overall drivability. - Compatibility: Ideal for mountain bikes, BMX, road bikes, and more, this cassette is fully compatible with Shimano and SRAM drivetrains. Use Scenarios: 1. Tackle steep mountain trails with confidence, thanks to the wide gear range that provides the necessary torque and speed. 2. Enhance your BMX performance with a lightweight design that supports fast acceleration and agile handling. 3. Optimize your road cycling experience with smooth gear transitions for seamless rides on varying terrain. This cassette stands out due to its robust construction, excellent performance attributes, and compatibility with renowned drivetrain brands, ensuring you have the reliable support needed for your cycling adventures.