Bike Rear Derailleur RD-U4000 9 Speed Derailleur for Road Bike City Bike

★★★★★ 4.8 30 reviews

US$23.20

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US$23.20

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Management number	210294583	Release Date	2026/04/02	List Price	US$23.20	Model Number	210294583
Category	Sports & Outdoors Sports Cycling Parts & Components Derailleurs & Shifters Derailleurs & Parts Rear Derailleurs

【Durability and Protection】The Rd-U4000 9 speed rear derailleur is made of aluminum alloy, weighing approximately 350 g（0.77 Lb）. Rust-resistant coating for wet environments and sealed bearings to minimize sediment intrusion.
【Guide Wheel Design】It is a dual guide wheel construction with 11T steel guide wheels for enhanced durability. Maximum tooth capacity is 45T, compatible with a wide range of sprocket (11-36T or 11-40T).
【Excellent Compatibility】It is compatible with a wide range of shifting grips, reducing upgrade costs. Rd-U4000 9 speed derailleur with Low-profile design reduces crash risk and improves stability on bumpy surfaces.
【Easy Maintenance and Installation】Modular structure allows for easy cleaning and replacement of parts and the guide wheel can be disassembled separately for maintenance.
【Precision Shifting】This Rd-U4000 9 speed derailleur supports 9-speed systems for city bike,mixed road bike. Optimized spring tension design ensures fast and precise shift response.