{"product_id":"shimano-grx-fc-rx820-chainset-48-31-double-12-speed-hollowtech-ii","title":"Shimano GRX FC-RX820 Chainset 48 \/ 31 - Double - 12-Speed - Hollowtech II","description":"\u003cp\u003eOptimal gearing for spirited group rides and aggressive racing The SHIMANO FC-RX820-2 balances weight savings and optimal efficiency for mixed-terrain riding and racing. Double chainring gearing caters to the segmented demands of gravel cycling, maintaining the tighter gear steps needed to maintain your position in the bunch. The 2x12-speed crank utilizes a 48-31T chainring\u003c\/p\u003e \u003cul\u003e \u003cli\u003eSmaller gear steps for cadence control on mixed-terrain riding\u003c\/li\u003e \u003cul\u003e \u003cli\u003eGravel-optimized gear ratios preserve riding rhythm on rough surfaces\u003c\/li\u003e \u003c\/ul\u003e \u003cli\u003e\u003cspan\u003eWider gear range\u003c\/span\u003e\u003c\/li\u003e \u003cul\u003e \u003cli\u003e17T range covers array of riding conditions\u003c\/li\u003e \u003c\/ul\u003e \u003cli\u003e \u003cspan\u003eGear combination: 48-31T\u003c\/span\u003e\u003cbr\u003e \u003c\/li\u003e \u003c\/ul\u003e","brand":"Shimano GRX","offers":[{"title":"170mm","offer_id":43939846553757,"sku":"FCRX8202C81","price":120.95,"currency_code":"GBP","in_stock":true},{"title":"172.5mm","offer_id":43939793830045,"sku":"FCRX8202D81","price":239.99,"currency_code":"GBP","in_stock":true},{"title":"175mm","offer_id":43939610820765,"sku":"FCRX8202E81","price":143.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0021\/9434\/1977\/files\/FC-RX820-2-48-31T-shic219-primary_1_750_750.jpg?v=1695906391","url":"https:\/\/www.bikeparts.co.uk\/products\/shimano-grx-fc-rx820-chainset-48-31-double-12-speed-hollowtech-ii","provider":"BikeParts.co.uk","version":"1.0","type":"link"}