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-Maintains straightness and durability-Compatible with standard HG freehub bodies and 10-speed chainsItem Specifications-Color:Black-Defined Color:Black-Cassette Body Type:Shimano/ 8, 9, 10 Speed-Range:11-48-Cassette Cogs:11-13-15-18-21-24-28-34-40-48-Weight:425 g-Drivetrain Speeds:10