CASSETTE SRAM XG-1199 10-42 11S.

Ranging from 10- to 42-teeth, the 11-speed X-DOME delivers an incredibly wide gear range while maintaining even, optimized steps. The single- unit cassette combines with the XD driver body for a superior connection to the wheel. 11-speeds (10-12-14- 16-18-21-24-28-32-36-42). Bearing design and ratchet mechanism steadied by XD driver body. Creates more stable hub connection. Gear steps optimized across entire range. XD driver body is 6-8g lighter.