The RDM57 is a robust 7/8-speed rear derailleur designed for MTB, trekking, and city bikes. With a long cage and direct-mount design, it accommodates wide-range cassettes up to 34T while maintaining consistent shift performance. Its steel and alloy construction ensures durability, and the 2:1 actuation ratio makes it compatible with Shimano-style shifters for reliable everyday use.
Features
Direct mount design for clean, secure installation
Long cage length for wide-range compatibility
Steel and alloy construction for strength and longevity
Technical Specifications
Speed: 7/8-speed
Fitting: Direct Mount
Cage: Long
Reach: 11-34T
Material: Steel and alloy construction
Intended use: MTB, E-BIke, City