Sometimes less is more. With 10-speeds, 11-48t range and evenly spaced gear steps, the ADVENT X cassette allows riders to shift less often to find the right gear, while still having enough range to ride what they want. Fewer cogs also means less weight, a wider chain for better mud shedding -- it even fits on standard 10-speed freehub bodies so you don't need to buy new wheels for no reason. In short, it's everything you want in a high end drivetrain. FEATURES: Two alloy large cogs and a full alloy spider eliminate unwanted weight Ramped cogs aid in shifting under load Continuously molded construction maintains straightness and durability Compatible with standard HG freehub bodies and 10-speed chains SPECS: Color: Black Cassette Body Type: Shimano/SRAM 8, 9, 10 Speed Drivetrain Speeds: 10 Cassette Cogs: 11-13-15-18-21-24-28-34-40-48t Weight: 425g Range: 11-48t