{"product_id":"shimano-cues-rd-u4020-2x9-rear-derailleur-black","title":"Shimano Rear Derailleur CUES RD-U4020 – 2×9-Speed, Long Cage, Black","description":"\u003ch2\u003eShimano CUES RD-U4020: Smooth Shifting for Everyday Riding\u003c\/h2\u003e\u003cp\u003eThe Shimano CUES RD-U4020 rear derailleur is designed for smooth, well-defined gear changes and dependable everyday performance. Specified for a 2×9-speed drivetrain with an 11–36T cassette, this black long-cage model combines SHADOW design with Top Normal operation.\u003c\/p\u003e\u003cp\u003eFrom a ride through the city to a route out into nature, the RD-U4020 helps make regular cycling a comfortable part of your routine. It is engineered and tested for sustained performance with e-bikes, provided the complete drivetrain is compatible.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2×9-speed specification:\u003c\/strong\u003e For a compatible drivetrain with two front chainrings and nine rear sprockets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmooth, defined shifting:\u003c\/strong\u003e Designed for comfortable, predictable gear changes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEveryday reliability:\u003c\/strong\u003e Developed for regular riding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE-bike suitability:\u003c\/strong\u003e Engineered and tested for lasting performance with e-bikes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSHADOW design:\u003c\/strong\u003e As specified for this model.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong cage and Top Normal:\u003c\/strong\u003e The configuration supplied for this listing.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eSpecifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eBrand: Shimano\u003c\/li\u003e\n\u003cli\u003eSeries: CUES\u003c\/li\u003e\n\u003cli\u003eModel: RD-U4020\u003c\/li\u003e\n\u003cli\u003eDrivetrain: 2×9-speed\u003c\/li\u003e\n\u003cli\u003eSpecified cassette range: 11–36T\u003c\/li\u003e\n\u003cli\u003eDesign: SHADOW\u003c\/li\u003e\n\u003cli\u003eCage: Long, SGS\u003c\/li\u003e\n\u003cli\u003eOperation: Top Normal\u003c\/li\u003e\n\u003cli\u003eColour: Black\u003c\/li\u003e\n\u003cli\u003eE-bike suitability: Yes, with a compatible setup\u003c\/li\u003e\n\u003cli\u003eManufacturer article number: ERDU4020SGS\u003c\/li\u003e\n\u003cli\u003eArticle number: 2091123820\u003c\/li\u003e\n\u003cli\u003eEAN: 4550170172039\u003c\/li\u003e\n\u003cli\u003eSupplier code: 4055149509934\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eCompatibility and Installation\u003c\/h2\u003e\u003cp\u003eThis listing is specified for a 2×9-speed, 11–36T setup. Do not assume compatibility with an 11–46T cassette. Confirm Shimano's compatibility information for the shifter, chain, cassette, front gearing and mounting arrangement before installation. Follow the manufacturer's fitting and adjustment instructions.\u003c\/p\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhich drivetrain is this derailleur specified for?\u003c\/h3\u003e\u003cp\u003eThe supplied specification identifies a 2×9-speed drivetrain: two front chainrings and nine rear sprockets.\u003c\/p\u003e\u003ch3\u003eWhat cassette range is specified?\u003c\/h3\u003e\u003cp\u003eThe stated range is 11–36T. Do not treat this as an 11–46T model.\u003c\/p\u003e\u003ch3\u003eIs it suitable for e-bikes?\u003c\/h3\u003e\u003cp\u003eYes. The supplied product details state that it is engineered and tested for sustained performance with e-bikes. Confirm compatibility with the complete drivetrain.\u003c\/p\u003e\u003ch3\u003eDoes it have a long cage?\u003c\/h3\u003e\u003cp\u003eYes. This version has a long cage, identified by SGS in the manufacturer article number.\u003c\/p\u003e\u003ch3\u003eDoes SHADOW mean it has a clutch?\u003c\/h3\u003e\u003cp\u003eThe supplied information specifies SHADOW, not SHADOW PLUS, and does not confirm a clutch. A clutch function is not claimed in this listing.\u003c\/p\u003e\u003ch3\u003eWill it work with any 9-speed shifter?\u003c\/h3\u003e\u003cp\u003eDo not assume universal compatibility from the speed count alone. Check Shimano's compatibility information for this exact derailleur and your shifter.\u003c\/p\u003e\u003ch3\u003eWhat colour is this version?\u003c\/h3\u003e\u003cp\u003eThis listing is for the black RD-U4020.\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":57392864854281,"sku":"2091123820","price":44.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0082\/4128\/3143\/files\/33_1b1a1c4e-5955-49a1-a7ee-9b7bb5c5166e.webp?v=1791367842","url":"https:\/\/silverbackbikes.de\/products\/shimano-cues-rd-u4020-2x9-rear-derailleur-black","provider":"Silverback Bikes","version":"1.0","type":"link"}