{"product_id":"shimano-ultegra-fc-8100-12-speed-crankset-165-mm-double-12-speed-ckst2131-bicycle-crankset","title":"Shimano Ultegra FC-R8100 12-Speed Crankset 50\/34t Hollowtech II 165mm","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eThe Shimano Ultegra FC-R8100 crankset is designed for 12-speed road bicycles. It features a 165mm crank length and a 50\/34 tooth double chainring configuration. The crankset uses Shimano's Hollowtech II spindle interface and has a 9\/16\" pedal spindle. It offers a 148mm Q-factor and a 44.5mm chainline compatible with 130mm hubs. The crankset incorporates a Hollowglide structure that reduces weight while maintaining strength for efficient power transfer and precise front shifting. The chainring BCD is 110 Shimano Asymmetric, and the crankset comes in black. Note that the bottom bracket is not included.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eDesigned for Shimano Ultegra 12-speed road bike drivetrains with precise front shifting and transmission efficiency. \u003c\/li\u003e\n\u003cli\u003eFeatures a 165mm crank length for improved fit and performance for smaller riders and triathletes. \u003c\/li\u003e\n\u003cli\u003eConstructed with a Hollowglide structure that reduces weight while maintaining strength for efficient power transfer. \u003c\/li\u003e\n\u003cli\u003eCompatible with 130mm hubs and uses a 9\/16\" pedal spindle with Shimano Hollowtech II spindle interface type. \u003c\/li\u003e\n\u003cli\u003eIncludes 50\/34 double chainrings with a 110 Shimano Asymmetric BCD, optimized for road cycling use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":42205660020803,"sku":"CKST2131","price":365.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/CK0647_bb0544ad-2c59-4128-9f0f-68a77522bf84.jpg?v=1785519406","url":"https:\/\/tecopecosafe.com\/products\/shimano-ultegra-fc-8100-12-speed-crankset-165-mm-double-12-speed-ckst2131-bicycle-crankset","provider":"365 Cycles","version":"1.0","type":"link"}