The 11-36 XG-1080 is the perfect complement to an X0 drivetrain. At under 240g, it's light, but that's just the beginning. The XG-1080 uses a hybrid construction that allows us to make this cassette without a spider, similar to the XX XG-1099. The XG-1080 cogs are individually crafted, helping achieve high performance, low weight, & great value.