Sure, we could have added 13 speeds, or a 54T cog. But with modern drivetrains adding complexity and weight, we thought it was time to slim things down instead. The ADVENT X cassette comes with 10 evenly spaced gears and an 11-48T range, all at an amazingly svelte 424g. The evenly spaced gearing means you won’t find yourself shifting twice to find the right gear, and the wide range and light weight mean you’ll have to wait for your friends at the top of the hill.