Sram X5 9 Speed Rear Derailleur Medium Cage SilverThis Sram X5 Rear Derailleur is designed for a 9 Speed drive train. Designed with the solid Alloy B-Knuckle, Alloy Links, and rugged Grilion Composite P-Knuckle. These long lasting components accentuate Sram’s Exact Actuation and Direct Route shifting technologies to redefine your idea of what smooth shifting should feel like. Medium Cage. Weighs only 290 grams. Available in Silver.710845673825