Full X-Sync tooth profile for best-ever inboard and outboard shifting performance under loadUtilizes 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 endsOptimized 7-speed, 10-24t gear steps for DHT-Type chain compatibility onlySetup Cog for fool-proof set up10-24t7sp10,12,14,16,18,21,24SilverXS797XDUPC/EAN/GTIN: 710845928017