{"product_id":"shimano-ultegra-fc-8100-12-speed-crankset-170-mm-double-12-speed-ckst2100-bicycle-crankset","title":"Shimano Ultegra FC-R8100 12-Speed Hollowtech II Crankset 52\/36t","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eThe Shimano Ultegra FC-R8100 crankset is designed for 12-speed road bikes. It features a 170mm crank length and a 52\/36 tooth double chainring setup. Built with Shimano's Hollowtech II technology, the crankset offers a balance of stiffness, strength, and weight for efficient power transfer and precise front shifting. It has a 148mm Q-factor and a 44.5mm chainline, compatible with 130mm hubs. The crankset uses a 9\/16\" pedal spindle and a 110mm Shimano Asymmetric chainring BCD. This black crankset is part of the Ultegra 12-speed lineup but does not include a bottom bracket.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003eCompatible with 12-speed Shimano Ultegra drivetrains for precise and efficient shifting performance. \u003c\/li\u003e\n\u003cli\u003eFeatures 52\/36t double chainrings designed for road cycling applications. \u003c\/li\u003e\n\u003cli\u003eConstructed with Shimano Hollowglide technology for lightweight strength and improved power transfer. \u003c\/li\u003e\n\u003cli\u003eCrank length measures 170mm, suitable for various rider biomechanics and fits smaller riders. \u003c\/li\u003e\n\u003cli\u003eIncludes a 9\/16\" pedal spindle and 110 Shimano Asymmetric chainring BCD for reliable compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Shimano","offers":[{"title":"Default Title","offer_id":42205667754051,"sku":"CKST2100","price":365.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/CK0647_2d63d4a4-e022-48a7-9203-9196d4722db9.jpg?v=1773385142","url":"https:\/\/tecopecosafe.com\/products\/shimano-ultegra-fc-8100-12-speed-crankset-170-mm-double-12-speed-ckst2100-bicycle-crankset","provider":"365 Cycles","version":"1.0","type":"link"}