SRAM XX1 XG-1199 11 Speed MTB CassetteThe future has landed, taking on the form of 1x 11 gearing, SRAM are ahead of the game. With the SRAM XX1 cassette being the first of its kind, 11 speed is now a reality.Ranging from 10- to 42-teeth, the 11-speed X-Dome delivers an incredibly wide gear range while maintaining even, optimised steps. The single-unit cassette combines with the XD driver body for a superior connection to the wheel.SRAM XX1 XG1199 11 Speed MTB Cassette Features:X-Dome – X-Dome technology creates an incredibly lightweight, precise and strong cassette. The open design aids in mud clearance, giving you cleaner shifting performance and longer component lifeXD Driver body – XD is a new cassette driver body design that allows the use of a 10 tooth small cog and provides and improved interface with the cassette. Wheels equipped for the XD Driver boy are available from SRAM and DT SwissSRAM XX1 XG1199 11 Speed MTB Cassette Specifications:SRAM 1x Design SpecificWorks In Harmony With All XX1 Products11 Speeds (10/12/14/16/18/21/24/28/32/36/42)Bearing Design And Ratchet MechanismX Dome TechnologyWeight: 260gBuy SRAM XX1 XG1199 11 Speed MTB Cassette from Chain Reaction Cycles, the World’s Largest Online Bike Store.