{"product_id":"grx-rd-rx812-rear-derailleur-black-rear-good-1618280","title":"Shimano GRX RD-RX812 Rear Derailleur","description":"\u003cb\u003eProduct Condition:\u003c\/b\u003e The GRX RD-RX812 Rear Derailleur is in Good condition. Was previously owned for approximately 1 month. Derailleur shows little to no signs of installation or use. Original packaging is damaged. Sold as-is. All warranties void. \u003cp\u003e\n\n\u003cb\u003eSize:\u003c\/b\u003e Unisex  Rear\u003c\/p\u003e\u003cp\u003e\n\n\u003cb\u003eColor:\u003c\/b\u003e Black\u003c\/p\u003e\u003cp\u003e\n\n\u003cb\u003eRetail Cost:\u003c\/b\u003e $145.00\u003c\/p\u003e\u003cp\u003e\n\n\n\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eWhat Our Gearhead Experts Are Saying:\u003c\/strong\u003e\u003c\/p\u003e\u003cp\u003e \"I switched to the GRX RX812 for my 1x gravel rig and haven’t looked back. The clutch keeps my chain tight over chunky descents, and shifting stays smooth even when my drivetrain’s covered in dust and mud. It’s basically MTB toughness adapted perfectly for drop bars.\"\u003c\/p\u003e\u003cp\u003eFrom washboard descents to rocky doubletrack climbs, we rely on the Shimano GRX RX812 Rear Derailleur to keep our shifting crisp and our chain quiet. Purpose-built for gravel and adventure riding, this derailleur brings proven Shimano MTB tech into the drop-bar world, so we can charge harder without worrying about dropped chains or ghost shifts.\u003c\/p\u003e\u003cp\u003eThe RX812 uses a clutch-based Shadow RD+ design to maintain consistent chain tension, especially when the terrain gets rough. It's optimized for a 1x11 drivetrain with an 11–42t cassette range, giving us simplicity up front and plenty of gearing in the back. Whether we’re racing a gravel grinder or tackling a weeklong bikepacking route, this derailleur delivers smooth, reliable performance with zero drama.\u003c\/p\u003e\u003cbr\u003e\nGRX RX812 derailleur delivers smooth, clutch-stabilized shifting for gravel adventures (DWGC3IJ)\n                \u003cbr\u003e\u003cbr\u003e\n                \u003cp\u003e\n                    \u003cstrong\u003eTECH SPECS\u003c\/strong\u003e\n                \u003c\/p\u003e\n                \u003cul\u003e\n\u003cli\u003eMaterial: alloy\u003c\/li\u003e\n\u003cli\u003eCapacity: 31t\u003c\/li\u003e\n\u003cli\u003eCassette Range: [maximum] 11 - 42t, [minimum] 11 - 40t\u003c\/li\u003e\n\u003cli\u003eGearing: 1 x 11\u003c\/li\u003e\n\u003cli\u003eCompatibility: Shimano 11speed\u003c\/li\u003e\n\u003cli\u003eClaimed Weight: 9.4oz (267g)\u003c\/li\u003e\n\u003cli\u003eActivity: gravel\u003c\/li\u003e\n                \u003c\/ul\u003e\n                ","brand":"backcountry","offers":[{"title":"Rear \/ Black","offer_id":53353491792177,"sku":"DWGC3IJ","price":100.47,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0839\/9133\/1121\/files\/2123505908692ece6317b6f.webp?v=1775520852","url":"https:\/\/geartrade.com\/products\/grx-rd-rx812-rear-derailleur-black-rear-good-1618280","provider":"Geartrade.com","version":"1.0","type":"link"}