Shimano CUES RD-U4020 Rear Derailleur 9-Speed, Long Cage (SGS, LINKGLIDE, E-Bike Rated)
High-Performance 9-Speed Rear Derailleur for E-Bikes, Trekking, and Everyday Riding
The Shimano CUES RD-U4020 SGS Rear Derailleur is engineered for riders who demand reliable, long-lasting shifting performance in a wide range of conditions. Built with LINKGLIDE technology, this long cage derailleur is up to 300% more durable than traditional Hyperglide systems, ensuring smooth and consistent gear changes even under heavy loads, making it ideal for e-bikes, trekking bikes, hybrids, and commuters.
LINKGLIDE Drivetrain Technology
Provides ultra-smooth shifting and significantly extended drivetrain life, especially under high-torque pedaling common in e-bike and trekking use.
Shadow RD Design
Low-profile construction reduces derailleur exposure to impacts, while an optimised slant angle ensures light, responsive shifting and better clearance in tight terrain.
Wide Link Design
Enhances stiffness and durability, resulting in improved shifting precision and longer service life.
One Fluorine-Coated Link Pin Bushing
Reduces friction for smoother movement and consistent performance over time.
Long Cage (SGS) for Double Chainrings
Handles a total capacity of 41T and a maximum front chainring difference of 16T. Compatible with a 36T low rear sprocket, ideal for climbing and load-carrying.
Durable Build
Constructed with a robust aluminium bracket body and tough steel inner and outer plates for long-term reliability.
Oversized 11-Tooth Pulleys
Deliver improved chain retention and reduce wear for a quieter, more efficient drivetrain.
E-Bike Compatible
Engineered to meet the increased torque and demands of e-bike riding.
Built for longevity, performance, and smooth operation, the RD-U4020 is perfect for riders who need a durable 9-speed derailleur with e-bike rated performance and wide gear compatibility. Whether you're riding daily or exploring off the beaten path, it delivers consistent, low-maintenance shifting you can count on.
Upgrade to the Shimano CUES RD-U4020 SGS for long-lasting 9-speed performance, built tough for e-bikes, commuters, and gravel explorers.