The SRAM Force® rear derailleur takes advantage of Exact Actuation, an actuation ratio that offers precise 3mm shifts in each gear and the widest range of adjustment available, providing the best 10-speed performance in the sport.With WiFLi, the rear derailleur extends its cage and gets a slight geometry change to accommodate an 11-32 cassette. The new gear range is wider than the standard triple chainring system and saves a lot more than 250 grams.The SRAM Force rear derailleur is made with advanced materials, including a unidirectional carbon fiber outer cage and a magnesium inner link. Exact Actuation means precise and consistent shifting throughout the entire shift range.The carbon fiber outer cage and magnesium inner link provide strength and lightness. aluminum cage Features:Weight: 190 gCompatibility: 32T max cassettesCage sizes: Medium cageTechnology:EXACT ACTUATION: When we launched our road technology from scratch, we reapplied our proven SRAM 1:1 actuation ratio (sh...