Effortless performance. Effortless perfection. Effortless one-finger braking, smooth front shifting, fully wireless connectivity, and expanded gearing choices to fit every rider. Lighter than ever before Includes rear derailleur, front derailleur, shift-brake controls, disc brake calipers, rotors, battery charger, and Hammerhead Karoo SRAM Model ID: GS-RED-E-E1

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