518efAXRdKL. SL160  SRAM Force Road Bike Rear Derailleur SRAM Force Road Bike Rear Derailleur This rear derailleur uses Exact Actuation ratio to deliver even gear changes over the entire shifting range, via a precise 3mm adjustment from gear to gear. The result is quick shifting action that packs a punch and 10-speed performance that cant be beat. Carbon fiber outer cage, aluminum B-knuckle and magnesium inner link provide lightweight strength and weighs only a mere 174g.

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