Sram force 22 wifli 11 speed rear mechthe sram force rear derailleur takes advantage of exact actuation an actuation ratio that delivers precise 3mm shifts in every gear along with the widest range of adjustment available delivering the best 11 speed performance in the sport with wifli the rear derailleur lengthens its cage and gets a slight variation in geometry to accommodate an 11 32 cassette the new range of gears is wider than the standard triple chainring system and saves well over 25