Introducing the SRAM GX group with 11-speed drivetrains, bringing high-end technology to the masses. Compatible with SRAM's massive 10-42 cassette, the GX1 11-Speed Rear Derailleur offers the widest range of gears. Engineered to perfection, this derailleur utilizes offset pulleys with square-toothed X-Sync profiles for smooth, precise, and reliable shifts. With the X-HORIZON's straight parallelogram design, ghost shifting is eliminated and shifting force is minimized. And let's not forget about the Roller Bearing Clutch for consistent chain tension, even in the toughest riding conditions. Topped off with sealed cartridge bearings and SRAM's Cage Lock for quick wheel changes, this rear mechanism has got you covered.