Model: The RD-M3100-GS is a high-performance 9-speed bike rear derailleur with a sleek black finish and direct-mount design. It features an 11-tooth pulley wheel and is compatible with cassettes up to 40T (fits 11-36T and 11-40T). With a 45T total capacity, it delivers reliable shifting and wide gear adaptability for various riding needs
Robust Durability: Built for rugged trails, the low-profile design positions the derailleur closer to the cassette, reducing impact damage and improving longevity. It ensures consistent, reliable shifting on rough terrain
Simple Maintenance: The intuitive structure makes adjustment and tuning easy, while maintaining excellent chain stability for smooth, secure rides on bumpy paths
Large Climbing Capability: Optimized for steep ascents, the RD-M3100 provides efficient gear ratios, giving riders the mechanical advantage to tackle climbs with confidence
Versatile Compatibility: Designed for versatility, it performs reliably across commuters, touring bikes, mountain bikes, and road bicycles—delivering smooth shifts for any riding style