The Eagle 90 Transmission derailleur is the definitive answer to how good a mechanical derailleur can be. It features a completely new T-Type cable pull ratio, ensuring the most precise and crisp gear shifts ever—every time! The Eagle 90 utilizes the same full mount design as its electronic counterparts, making it the most stable mechanical derailleur we have ever built. Not only is it robust, but the derailleur body also includes interchangeable outer and inner parallelogram links, skid plates, and a tool-free removable cage assembly, making it our most repairable derailleur in the Eagle Transmission Ecosystem.