{"product_id":"shimano-grx-rd-rx820-rear-derailleur-12-speed-direct-mount-one-spec-shadow-plus-design-36t-max-low","title":"Shimano GRX RD-RX820 12-Speed 36t Max Rear Derailleur","description":"\u003cp\u003eThe Shimano GRX RD-RX820 is a \u003cstrong\u003e12-speed mechanical gravel derailleur for 11-34t and 11-36t cassettes\u003c\/strong\u003e. An integrated chain stabilizer with an ON\/OFF switch gives quiet, secure chain control on rough surfaces.\u003c\/p\u003e\n\u003cp\u003eIt lists \u003cstrong\u003e42t of capacity\u003c\/strong\u003e, weighs 270 g and uses HG 12-speed chains. Listed for both Shimano rear direct mount and standard hanger mounting.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eGravel riders on GRX 12-speed mechanical.\u003c\/li\u003e\n\u003cli\u003eRiders replacing an RX820.\u003c\/li\u003e\n\u003cli\u003eNot for 11-speed or Di2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eWhat to Look For\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCassette:\u003c\/strong\u003e 11-34t or 11-36t, 12-speed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain:\u003c\/strong\u003e HG 12-speed.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShifter:\u003c\/strong\u003e Shimano 12-speed road mechanical.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cstrong\u003eShadow RD+.\u003c\/strong\u003e Reduces chain slap and drops.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eON\/OFF stabilizer switch.\u003c\/strong\u003e Match the setting to the terrain.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e42t capacity.\u003c\/strong\u003e Covers a 2x crank with a 36t cassette.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eRider Intent Summary\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiggest strengths:\u003c\/strong\u003e Quiet 12-speed gravel shifting with a switchable stabilizer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTradeoffs:\u003c\/strong\u003e 36t maximum.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat makes it different:\u003c\/strong\u003e GRX's mechanical 12-speed derailleur.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003e\u003cstrong\u003eVictory's Take\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eWe like the RX820 for riders who want 12-speed gravel gearing with cables. Victory Bicycle Studio can confirm compatibility.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Shimano\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e GRX RD-RX820\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrivetrain speeds:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLargest cog:\u003c\/strong\u003e 36t\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCassette range:\u003c\/strong\u003e 11-34t, 11-36t\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain wrap capacity:\u003c\/strong\u003e 42t\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount:\u003c\/strong\u003e Shimano rear direct mount \/ standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChain:\u003c\/strong\u003e HG 12-speed\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 270 g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e IRDRX820\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":53537528774963,"sku":"IRDRX820","price":145.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0981\/3685\/0739\/files\/4fef2c6244e5f540f0aad60900bb1505035c4c94.jpg?v=1782250481","url":"https:\/\/victorybicyclestudio.com\/products\/shimano-grx-rd-rx820-rear-derailleur-12-speed-direct-mount-one-spec-shadow-plus-design-36t-max-low","provider":"Victory Bicycle Studio","version":"1.0","type":"link"}