{"product_id":"shimano-grx-fc-rx820-1-crankset-175mm-12-speed-40t-110-bcd-hollowtech-ii-blk","title":"Shimano GRX FC-RX820-1 12-Speed 1x 40T Hollowtech II 175mm Black Crankset","description":"\u003cp\u003eBuilt for taller riders and those who prefer more leverage, this GRX FC-RX820-1 has \u003cstrong\u003e175mm arms\u003c\/strong\u003e with a 40-tooth single ring for Shimano 12-speed gravel drivetrains. It fits Hollowtech II bottom brackets and is finished in black.\u003c\/p\u003e\u003cp\u003eThe RX820 is Shimano's 1x gravel crank, which Shimano says balances low weight, efficiency and gearing range. The 175mm length is the longest common option, so \u003cstrong\u003econfirm your fit before choosing it\u003c\/strong\u003e. No bottom bracket is included.\u003c\/p\u003e\u003ch4\u003e\u003cstrong\u003eWho It's For\u003c\/strong\u003e\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003eGravel riders on GRX 12-speed 1x whose fit calls for 175mm\u003c\/li\u003e\n\u003cli\u003eRiders who want a 40T all-rounder ring\u003c\/li\u003e\n\u003cli\u003eOwners of Hollowtech II-compatible gravel frames\u003c\/li\u003e\n\u003cli\u003eConsider a different crank if you're between sizes or want more pedal clearance — a shorter arm may suit you better\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003e\u003cstrong\u003eWhat to Look For\u003c\/strong\u003e\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle interface:\u003c\/strong\u003e Hollowtech II; bottom bracket sold separately.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing and speed:\u003c\/strong\u003e 40T, 12-speed, 110 Shimano asymmetric BCD.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFrame fit:\u003c\/strong\u003e listed for 135\/142 road disc hubs on chainstays over 415mm.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h4\u003e\u003cp\u003e\u003cstrong\u003eHollowtech II interface.\u003c\/strong\u003e The spindle fits Shimano Hollowtech II bottom brackets; picking the right BB for your shell avoids install surprises.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSingle 40T ring.\u003c\/strong\u003e Mounted on the 110 Shimano asymmetric BCD, so replacement rings in other sizes need that same pattern.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGravel chainline.\u003c\/strong\u003e Listed for 135\/142 road disc hubs with chainstays over 415mm.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e175mm arms.\u003c\/strong\u003e Longer arms add leverage at the pedal, which some taller riders prefer on steady climbs, but they also widen the range of motion at the hip and knee. Black, 9\/16\" pedal threads, 644g listed weight.\u003c\/p\u003e\u003ch4\u003e\u003cstrong\u003eRider Intent Summary\u003c\/strong\u003e\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBiggest strengths:\u003c\/strong\u003e Long 175mm arms for riders who need them, GRX 12-speed 1x gearing, and a light listed weight.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTradeoffs:\u003c\/strong\u003e Long arms reduce pedal clearance; BB not included; 12-speed only.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat makes it different:\u003c\/strong\u003e Same RX820 platform in its longest length option.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003e\u003cstrong\u003eVictory's Take\u003c\/strong\u003e\u003c\/h4\u003e\u003cp\u003eWe only recommend 175mm when a fit supports it — at Victory Bicycle Studio we'll check that before this crank goes on your gravel bike.\u003c\/p\u003e\u003ch4\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h4\u003e\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 FC-RX820-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCrank length:\u003c\/strong\u003e 175mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrivetrain speeds:\u003c\/strong\u003e 12\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChainring:\u003c\/strong\u003e 40T single\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBCD:\u003c\/strong\u003e 110 Shimano asymmetric\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpindle interface:\u003c\/strong\u003e Shimano Hollowtech II\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eChainline \/ hub compatibility:\u003c\/strong\u003e 135\/142 road disc hubs, chainstay \u0026gt; 415mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntended use:\u003c\/strong\u003e Gravel\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 644g\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePedal thread:\u003c\/strong\u003e 9\/16\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBottom bracket:\u003c\/strong\u003e Not included\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e IFCRX8201EXB0\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":53538369175859,"sku":"IFCRX8201EXB0","price":280.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0981\/3685\/0739\/files\/c08e548636cfb2a8f3a5d7994ddc02f584d05b3f.jpg?v=1782260287","url":"https:\/\/victorybicyclestudio.com\/products\/shimano-grx-fc-rx820-1-crankset-175mm-12-speed-40t-110-bcd-hollowtech-ii-blk","provider":"Victory Bicycle Studio","version":"1.0","type":"link"}