SRAM Rival 22 WiFLi 11 Speed Rear DerailleurThis professional Rear Derailleur from SRAM inspires confidence when tackling the toughest trails. Made from durable, lightweight aluminium, this flawless component is the ideal addition to your ride. With many of the world’s top teams ‘Making the Leap’ to SRAM, there is little doubt that wins at the Classics, Grand Tours, Ironman(™), and Cross Worlds were due in part to the lightest, most efficient, and ergonomic road componentry ever made.Features:Mid-cage derailleur works with cassettes up to 32 teethWiFLi™ delivers a wider range of gears than your standard triple, faster shifts through two chainrings and every gear on the rear cassette, and with significant weight savingsCage Length/Type: Aluminium Cage, Medium, Mid (WiFLi), ShortSpeed: 11 SpeedMaterial Steel: Aluminium Outer & Inner Cages/ Aluminium Links/ Stainless Steel hardwareClutch Option: Compatibility: Cassettes from 11-26 to 11-32Finish: Grey & Black Anodized FinishWeight: 191gPart No: RD-RIV-B1Technologies:AeroGlide Pulleys™: New tooth pulley design with a sound damping effect for a super-efficient and silent ride experience. Bottom and top pulleys benefit from this feature.Exact Actuation™: When we launched our road technology from scratch, we reapplied our MTB proven SRAM 1:1 actuation ratio (shifter cable travel: derailleur movement) for 10 speed rear shifting. EA helps to simplify/stabilize the uneasy act of balancing rear derailleur hanger design, tight cog spacing and exact cable tension. The result: the easiest index shifting system to set up and it stays that way.WiFLi™: SRAM’s WiFLi™ Technology is based on the compact 2 x 10 - two front chainrings and 10 gears in the rear - design inherent in SRAM Apex and Rival, which delivers a wider range of gears than your standard triple, faster shifts through two chainrings and 10 gears, and with significant weight savings. It’s the newest technology from the company that continues to innovate the cycling experience.Buy SRAM Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.