SRAM Rival 22 WiFli Rear Derailleur - 11 Speed Medium Cage Black/SilverSacrifice nothing not durability, dependability, or performance. Uses Exact Actuation cable pull ratio for eay set up and reliable shift performance. Works with standard or compact 11 speed road cranks Aluminum cage and parallelogram, stainless steel hardware Compatible with SRAM road shifters and 10 speed MTB shifters Aluminum cage and parallelogram Product Specifics Rear Derailleur Mount Type: 10x1 Standard Rear Der Shifter Compatibility: SRAM Exact