{"product_id":"shimano-ultegra-fc-8100-12-speed-crankset-175-mm-double-12-speed-ckst2105-bicycle-crankset","title":"Shimano Ultegra FC-R8100 12-Speed Hollowtech II Crankset 50\/34t","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eThe Shimano Ultegra FC-R8100 Crankset is designed for 12-speed road bikes, featuring a 175mm crank length and a 50\/34 tooth double chainring setup. It uses Shimano's Hollowtech II spindle interface and has a 9\/16\" pedal spindle. The crankset offers a 44.5mm chainline and a 148mm Q-factor to optimize rider fit and performance. Constructed with a Hollowglide structure, it balances stiffness, strength, and weight to enhance power transfer and front shifting precision. This model is compatible with 130mm hubs and uses a 110 Shimano Asymmetric chainring bolt circle diameter. The crankset is black in color and does not include a bottom bracket.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eDesigned for Shimano 12-speed road drivetrains with 50\/34t double chainrings for optimized gear range. \u003c\/li\u003e\n\u003cli\u003eFeatures a Hollowtech II spindle interface for reliable and efficient power transfer. \u003c\/li\u003e\n\u003cli\u003eCrank length is 175mm, suitable for a range of rider preferences and biomechanical needs. \u003c\/li\u003e\n\u003cli\u003eConstructed with a Hollowglide structure balancing stiffness, strength, and reduced weight. \u003c\/li\u003e\n\u003cli\u003eCompatible with 130mm hub spacing and 110 BCD Shimano Asymmetric chainrings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":42205668737091,"sku":"CKST2105","price":365.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/CK0647_0248c96c-d8e3-4ff5-b700-f9671ec3d75e.jpg?v=1773386786","url":"https:\/\/tecopecosafe.com\/products\/shimano-ultegra-fc-8100-12-speed-crankset-175-mm-double-12-speed-ckst2105-bicycle-crankset","provider":"365 Cycles","version":"1.0","type":"link"}