Smooth, clean and correct shifting - the new Sram Force 22 rear derailleur. The most precise gear changes in cycling are presented in the form of the SRAM Force 22 rear derailleur. The rear derailleur features Exact Actuation™, a transmission ratio that allows precise 3 mm switching distances over the entire transmission range. The rear derailleur has a longer cage and a slightly modified geometry and is called "mid-cage" rear derailleur. It is used for cassettes with a large transmission ratio. This system offers a wider transmission ratio range than a standard system with three chainrings and saves a good 250 grams in weight compared to a standard system with three chainrings The Force 22 rear derailleur is made of the most modern materials. For example, the outer cage is made of carbon and the inner parallelogram arm of magnesium. Together this results in an incredibly light weight of 178 g.