- Full X-SYNC for best-ever inboard and outboard shifting performance under load with optimized gear steps on low end
- Utilizes hardened tool steel machined X-Dome design for the cluster and stamped steel 38T and 44Tcogs are pinned to the lighter weight aluminum 12th gear
- 55mm chainline compatibility for more moderate chain angle, longer wear and greater precision
- Utilizes well accepted and broadly available XD driverbody