Adopting all the technologies that give the fastest, quietest shifting available, the new SRAM Force 22 Rear Derailleur has been designed with our Exact Actuation technologyfor precise, efficient shifting throughout the extended gear range. We have given and even refining tooth geometry of the jockey wheel. The result is that the chain that runs smoother and quieter than ever before. With all the additional technologies we’ve managed to keep the weight the same, at well under 200 grams..,Exact Actuation shifting gives fast, accurate shifts.More clearance with 28t cassettes thanks to a longer B-knuckle.New silent shifting with optimized Aeroglide Pulleys.New spring-fixed barrel adjuster.New chain pulley cage adds precise chain management.WiFLi option.,