{"product_id":"shimano-grx-di2-rd-rx817-1x11-speed-rear-derailleur","title":"SHIMANO GRX Di2 RD-RX817 1x11-SPEED REAR DERAILLEUR","description":"\u003ch3\u003eThe Shimano RD-RX817 GRX Di2 rear derailleur delivers quiet, smooth and precise shifting across demanding gravel terrain.\u003c\/h3\u003e\n\u003cp\u003eEngineered with SHADOW RD+ chain stabilisation, it minimises chain bounce and ensures reliable performance on rough surfaces. This 11-speed derailleur features Di2 electronic shifting for swift, accurate gear changes and is constructed from cold-forged aluminium for lightweight durability. Fully compatible with 11-speed E-tube Di2 systems and HG chains, it supports gear ratios up to 11-42T and weighs just 318g. Purpose-built for single-chainring gravel setups, it combines advanced technology with rugged reliability.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3\u003eFeatures \u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eShimano GRX, with its gravel specific ergonomics, optimized gearing options, rugged reliability, and quiet and stable drivetrain, sets itself apart from the rest of the component world\u003c\/li\u003e\n\u003cli\u003eLow profile Shadow Plus design 11-speed rear derailleur with Di2 technology for fast and precise shifting performance\u003c\/li\u003e\n\u003cli\u003eShadow Plus uses a chain stabilising switch that when on will reduce chain bounce in rough terrain maintaining more stable drive and shifting\u003c\/li\u003e\n\u003cli\u003eHigh tolerance cold forged aluminium link plates and body construction is extremely light and durable\u003c\/li\u003e\n\u003cli\u003e11-speed E-tube Di2 compatible\u003c\/li\u003e\n\u003cli\u003eCompatible with 11-speed HG chains\u003c\/li\u003e\n\u003cli\u003eWide gear ratio compatible up to 11-42T\u003c\/li\u003e\n\u003cli\u003eFor use with single chainset\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecification\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse: \u003c\/strong\u003eGravel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGroup:\u003c\/strong\u003e GRX Di2\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel: \u003c\/strong\u003eRD-RX817\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount Type:\u003c\/strong\u003e Direct Mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear front:\u003c\/strong\u003e 1-speed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGear rear:\u003c\/strong\u003e 11-speed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible Chain:\u003c\/strong\u003e HG-EV 11-speed, HG-X11\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax. teeth large sprocket:\u003c\/strong\u003e 42T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin. teeth large sprocket:\u003c\/strong\u003e 40T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMax. teeth small sprocket:\u003c\/strong\u003e 11T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMin. teeth small sprocket:\u003c\/strong\u003e 11T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTotal Capacity: \u003c\/strong\u003e41T\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaster unit:\u003c\/strong\u003e No\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirmware update by E-tube Project: \u003c\/strong\u003eYes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE-tube port (pcs):\u003c\/strong\u003e 1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eE-tube connector (pcs):\u003c\/strong\u003e 0\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eMaterial\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAluminium\u003c\/li\u003e\n\u003cli\u003eGFRP\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWeight\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e322g\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3\u003eContents\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 x Shimano GRX 11-speed Rear Derailleur Di2 RD-RX817\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"SHIMANO","offers":[{"title":"Default Title","offer_id":56834429256055,"sku":"RDRX817","price":286.74,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0707\/2350\/2370\/files\/rdrx817.jpg?v=1772708568","url":"https:\/\/www.allterraincycles.co.uk\/products\/shimano-grx-di2-rd-rx817-1x11-speed-rear-derailleur","provider":"allterraincycles","version":"1.0","type":"link"}