Shimano CUES RD-U4000 9 Speed Rear Derailleur Size:M optimises weight and stiffness through

optimises weight and stiffness through the increased use of carbon fibre

Magnesium citrate - 323

bikepacking and mixed-surface adventure riding is on your agenda

Ideal for commuting

Shimano CUES RD-U4000 9 Speed Rear Derailleur Size:M optimises weight and stiffness throughExpand your trail riding comfort zone with smooth operation and dependable performance. This 1x9 speed rear derailleur's smooth operation and dependability will help inspire riders to expand their trail riding comfort zone. Its low profile design and chain stabilization will give them the confidence to choose rougher routes. FeaturesStable drivetrain performance on trails, gravel, and city streetsOptimized geometry and spring tension reduce chain