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.11-48t range with even gear steps for predictable gear changesHardened steel cogs are optimized for eBike compatibilityED black with anodized surface finishContinuously forged precision cogsItem SpecificationsCassette Body TypeShimano HGCogs11-13-15-18-21-24-28-34-40-48ColorBlackDefined ColorBlackDrivetrain Speeds10Range11-48Weight662 microSHIFT ADVENT X Cassette Cassettes UPC: 657993259573