{"product_id":"shimano-grx-fc-rx820-48-31t-172-5mm-crankset","title":"Shimano GRX FC-RX820 48-31T 172.5mm Crankset","description":"\u003cp\u003eOptimal gearing for spirited group rides and aggressive racing\n\u003cbr\u003eThe 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 and comes in 170, 172.5, and 175 mm crank arm lengths.\n\u003cbr\u003eFeatures\u003c\/p\u003e\n\n\u003cp\u003eSmaller gear steps for cadence control on mixed-terrain riding\n\u003cbr\u003eGravel-optimized gear ratios preserve riding rhythm on rough surfaces\n\u003cbr\u003eWider gear range\n\u003cbr\u003e17T range covers array of riding conditions\n\u003cbr\u003eGear combination: 48-31T\n\u003cbr\u003eHollowtech crank arm\u003c\/p\u003e\n\n\u003cp\u003eTechnical Specifications\u003c\/p\u003e\n\n\u003cp\u003eMODEL NO: FC-RX820-2\n\u003cbr\u003eSERIES: GRX 12-speed\n\u003cbr\u003eAverage weight: 710\n\u003cbr\u003eRear speeds: 12\n\u003cbr\u003eCompatible chain: HG 12-speed\n\u003cbr\u003eChain line (mm): 47\n\u003cbr\u003eP.C.D. (mm): 110\/80\n\u003cbr\u003eSpider\/gear arms: 4\n\u003cbr\u003eChainring combination: 48-31T\n\u003cbr\u003eQ-factor (mm): 151\n\u003cbr\u003eCrank arm length (mm): 172.5\n\u003cbr\u003eRecommended bottom bracket|Threaded (normal): SM-BBR60\n\u003cbr\u003eRecommended bottom bracket|Press-Fit: SM-BB72\n\u003cbr\u003eThreaded bottom bracket shell width (mm): 68\/70\u003c\/p\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":45347716759661,"sku":"IFCRX8202DX81","price":413.99,"currency_code":"AUD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0586\/9436\/9389\/files\/IFCRX8202DX81_1__55939.1710112099.jpg?v=1781612246","url":"https:\/\/alchemycycletrader.com.au\/products\/shimano-grx-fc-rx820-48-31t-172-5mm-crankset","provider":"Alchemy Cycle Trader","version":"1.0","type":"link"}