Adopting all the technologies that provide fast, quiet shifting, the SRAM Force 22 rear derailleur has been designed with our EXACT ACTUATION™ technology for precise, efficient shifting throughout the extended gear range. FEATURES: Exact Actuation™ shifting provides fast, accurate shifts More clearance with 28t cassettes thanks to a longer B-knuckle Silent shifting with optimized AeroGlide™ Pulleys WiFLi™ option available SPECS: Speed (RD): 11 Cable Pull Ratio: Exact Actuation Cage (RD): Mid (WiFLi), Short Max Tooth: 28, 32 Color (RD): Silver Pulley Bearings Material: Steel Cage Material (RD): Carbon/Aluminum Drivetrain Configuration: 2x Communication Protocol: n/a Shift Technology: Exact Actuation Chain Technology: 11 Speed Powerchain Weight Based On: Short cage