The XX DH Transmission cassette is designed to deliver small steps for big power. With a full X-Sync tooth profile, the 7-Speed DH specific cassette is the best shifting, most robust DH cassette we have ever made. And just like Eagle Transmission, shifting under load isn't just possible, it's better. This allows you to never let up when dropping gears, letting you get to the next split quicker than your competition. And when milliseconds matter, XX DH Transmission might just be the difference between qualifying and going home. Available in two variants, XD and XD SLIM to optimize for different hub dimensions.Features- Full X-Sync tooth profile for best-ever inboard and outboard shifting performance under load.- Optimized 7-speed, 10-24t gear steps for DH- T-Type chain compatibility only- Setup Cog for fool-proof set up- Utilizes well accepted and broadly available XD driver body, or all-new gravity specific XD SLIM driver body for more symmetric spoke bracing angles on narrow 148mm rear ends.