The drivetrain embraced by core riders as the All-Day best friend is now available in Transmission with full e-bike compatibility. The no-compromise, budget minded ethos remains built into the system but is modernized for a new generation of e-bikes. The GX Eagle Transmission derailleur every is every bit as crisp and precise as the other derailleurs in the transmission family, but features things like removable skid plates for better protection and serviceability. Even on an e-bike you are now able to shift under load thanks to a combination of X-SYNC technology and cassette mapping, creating seamless shifts even during your hardest power output. Only compatible with 12 speed bikes that have UDH (Universal Derailleur Hanger) equipped frames. Crank arms not included.