The Advent MX E-Series cassette is the smoothest shifting, most durable cassette that we've ever made. That all starts with SpeedRamp, a series of discrete shifting ramps that move the chain quickly, quietly, and precisely under load. The cogs themselves have been upgraded as well: the profile has widened to 1.8mm, and the first seven cogs (11-28) have been constructed using full chromoly steel, helping to outlast even the most robust competitors.SpeedRamp technology delivers faster, quieter shiftingThicker chromoly cogs from 11t to 28t for 500% durability increase over hi-tensile steelReplaceable small cogs extend service lifeNickel plated satin finish results in less visible wearCompatible with Advent MX, Advent X and Sword 10-speed systemsCompatible with standard HG cassette hub bodiesRated for E-bikesItem SpecificationsCassette Body TypeShimano HGCogs11-13-15-18-21-24-28-34-40-48ColorSilver/BlackDefined ColorBlackDefined ColorSilverDesigned for ebikeYesDrivetrain Speeds10Range11-48Weight683 microSHIFT Advent MX E-Series Cassette Cassettes EAN: 4710495438757