microSHIFT Advent MX H-Series Cassette - 11-Speed 11-50t ED BLK For HG Driver

The Advent MX H-Series cassette is the smoothest shifting most durable cassette that microSHIFT has ever made. That all starts with SpeedRamp a series of discrete shifting ramps that move the chain quickly quietly and precisely under load. With separate ramps for moving the chain up and down the cassette Advent MX delivers fast quiet shifts so you can concentrate on enjoying the ride.