Shimano
The Shimano CUES RD‑U3020 is a long‑cage (SGS) rear derailleur for 2×9‑speed trekking and city bikes. It supports an 11‑36T cassette, features the Shadow RD chain‑stabilisation system, and is built from aluminium with a low‑profile design.
Checked Jul 13, 2026 14:20
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The Shimano CUES RD‑U3020 rear derailleur is designed for 2×9‑speed drivetrains used on trekking and city bicycles. It incorporates a long (SGS) cage that accommodates an 11‑36 tooth cassette and provides a total capacity of 41 teeth. The Shadow RD chain‑stabilisation system reduces chain slap and protects the mechanism from impacts, extending service life. Constructed from painted aluminium with polyamide‑reinforced components, the derailleur offers a low‑profile, flat design that clears chain stays in rough conditions. It is compatible with Shimano LinkGlide cassettes and shift levers such as SL‑U4000 and SL‑U4010, and works with standard Shimano chains. Introduced for the 2026 model year, the RD‑U3020 delivers reliable, precise shifting for everyday riding scenarios.
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