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SRAM GX X-HORIZON™ rear derailleur: Engineered for smooth, reliable shifting. Larger upper pulley offset, 12-tooth X-SYNC™ pulley wheels eliminate unwanted chain movement, ghost shifting, reduce shift force, chain slap.
The SRAM GX X-HORIZON™ rear derailleur is engineered for smooth, reliable shifting action-from the larger upper pulley offset to the 12-tooth X-SYNC™ pulley wheels. By eliminating unwanted chain movement, X-HORIZON™ shifts faster, puts an end to ghost shifting and reduces shift force and chain slap. And with CAGE LOCK™ technology, wheel removal and installation are easier than ever