{"product_id":"shimano-ultegra-fc-8100-12-speed-crankset-160-mm-double-12-speed-ckst2103-bicycle-crankset","title":"Shimano Ultegra FC-R8100 Crankset 12-Speed, Hollowtech II, 50\/34T","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eThe Shimano Ultegra FC-R8100 crankset is designed for 12-speed road bikes, featuring a 160mm crank length and a 50\/34 tooth double chainring setup. It incorporates Shimano's Hollowtech II spindle interface and a Hollowglide structure, which reduces weight while maintaining strength for efficient power transfer and precise front shifting. The crankset has a 148mm Q-factor and a 44.5mm chainline, compatible with 130mm hubs and a 110 Shimano Asymmetric chainring BCD. This black crankset is intended for road use and does not include a bottom bracket. Pedal spindle size is 9\/16\".\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eDesigned for 12-speed Shimano Ultegra road drivetrains with a 50\/34 tooth double chainring setup. \u003c\/li\u003e\n\u003cli\u003eFeatures Shimano Hollowtech II spindle interface for efficient power transfer. \u003c\/li\u003e\n\u003cli\u003eCrank arm length is 160mm, offering fit options for smaller riders and specific biomechanical needs. \u003c\/li\u003e\n\u003cli\u003eConstructed with a Hollowglide structure to reduce weight while maintaining strength. \u003c\/li\u003e\n\u003cli\u003eOptimized with a 44.5mm chainline and 148mm Q-factor for road use with 130mm hub compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":42205668933699,"sku":"CKST2103","price":365.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/CK0647_c997fafb-7f7b-479d-85ef-b61f7cd4103a.jpg?v=1773385207","url":"https:\/\/tecopecosafe.com\/products\/shimano-ultegra-fc-8100-12-speed-crankset-160-mm-double-12-speed-ckst2103-bicycle-crankset","provider":"365 Cycles","version":"1.0","type":"link"}