The Shimano CUES RD-U3020 is the 9-speed rear derailleur built for daily riding dependability, delivering smooth, decisive shifts whether you are commuting through town or heading out onto gravel and trail. Its SGS long cage handles a wide gear range, and the SHADOW low-profile design tucks the mechanism in tight to stay clear of obstacles and rough terrain.

Highlights

• Reliable 9-speed CUES shifting for everyday commuting, gravel and light trail riding
• SGS long cage wraps a wide gear range with up to a 36T low sprocket
• SHADOW low-profile body sits in close to reduce snags and chain-stay strikes
• Durable LINKGLIDE drivetrain compatibility for long service life under load
• Approved for e-bike use, suiting higher-torque mid-drive builds
• Direct-mount design for clean, secure attachment

Built for everyday riding

CUES is Shimano's unified component family designed to simplify the drivetrain and last longer between services. The RD-U3020 gives you consistent, quiet shifting across the cassette so the bike just works, ride after ride.

SHADOW low-profile design

The SHADOW RD construction keeps the derailleur body tucked in close to the frame. That low profile helps protect the mechanism from rocks, kerbs and trail debris, and keeps shifting smooth and quiet when the terrain gets rough.

Wide range with a long cage

With a 41T total capacity and a 36T maximum low sprocket, the SGS long cage manages the chain slack of a wide 2x9 gear range, giving you the climbing gears you need without sloppy shifting.

Compatibility & fit

This is a 9-speed rear derailleur for the Shimano CUES LINKGLIDE drivetrain and must be paired with a CUES 9-speed LINKGLIDE shifter. It mounts via Shimano Rear Direct Mount (10x1 standard), runs 11T guide and tension pulleys, and works with LINKGLIDE and HG 11-speed chains. Total capacity is 41T with a 36T maximum low sprocket. Rated for e-bike use.