The GX DH 7 Speed Cassette from SRAM boasts the same industry-leading 1x features as SRAM's X01 DH drivetrain which has enjoyed repeated success on the World Cup circuit & is now available to the masses. Unlike the rest of the DH 7-Speed range, you do not need an XD driver for this cassette as it has been developed to work with your existing splined driver body. Thanks to its light & durable construction, this compact cassette gives each gear change more purpose to ensure a faster transition. With excellent clearance between the sprockets & spokes, you won't have to worry about mud build up which can affect shifting performance. To top it off, this trail-blazer is also fully compatible with SRAM's X01 range, so if you want to upgrade your rear mech or shifter, you won't have to start from scratch.