Sram xg 1190 11 speed cassette srams xg 1190 11 speed cassette is cnc machined to make it very lightweight super durable and extremely quiet it also benefits from the best technologies of sram red and xx cassettes namely their powerdomex construction this involves machining the middle 9 sprockets from a single block of high grade tool steel and using a machined backplate on the largest cog for increased strength and stiffness in the climbing gear smooth crisp shifting with mile after mi