The force rear derailleur represents the same design philosophy that has yielded our best in class products for the mtb market the 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 10 speed performance in the sport the force derailleur is crafted with cutting edge materials including a carbon fibre outer cage and a magnesium inner link the final r