SRAM rear derailleur FORCE The Sram Force rear derailleur is based on the design philosophy of high-end products for the MTB market. It features Exact Actuation, a transmission ratio between the shift lever and rear derailleur that allows precise shifting distances of 3mm between all gears. A wide range of adjustments guarantees the best performance with a 10-speed cassette. Technology: Exact Actuation Gears: 10 Weight: 178g Material: Aluminium rod end, inner lever of the parallel shift in magnesium, cage in carbon and aluminium - Compatibility: Max. 28 teeth.