{"product_id":"shimano-bottom-brackets","title":"Shimano Hollowtech II Bottom Brackets","description":"\u003cp\u003eShimano offers various bottom brackets primarily using the Hollowtech II system (external bearings and a 24mm spindle) in both threaded and press-fit configurations to fit different frame types.\u003cbr\u003eOther systems like Square Taper and Octalink are also available for older or entry-level components.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eCommon Shimano Bottom Bracket Types\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe type of bottom bracket you need is determined by your bike's frame and crankset. Shimano predominantly uses its Hollowtech II design across most modern groupsets.\u003cbr\u003e\u003cstrong\u003eHollowtech II:\u003c\/strong\u003e This is Shimano's main system, featuring an integrated 24mm spindle attached to the right crank arm and external bearings (for threaded) or pressed-in cups with internal bearings (for press-fit). This design is widely praised for its optimal balance of stiffness, strength, and light weight.\u003cbr\u003e\u003cstrong\u003eSquare Taper:\u003c\/strong\u003e An older, cartridge-style system where the crank arms attach to a square spindle. The Shimano BB-UN300\u0026amp;nbsp;is a common model in this category, known for its reliability and durability.\u003cbr\u003e\u003cstrong\u003eOctalink:\u003c\/strong\u003e Predecessor to Hollowtech II, this system uses a splined interface between the crank and the bottom bracket spindle for a more rigid connection than square taper. The Shimano BB-ES300\u0026amp;nbsp;is a popular Octalink bottom bracket.\u003c\/p\u003e","brand":"shimano","offers":[{"title":"MTB PF 89.5\/92mm BB-MT500-PA Deore","offer_id":47596847071370,"sku":"EBBMT500PA","price":35.0,"currency_code":"SGD","in_stock":true},{"title":"MTB PF 89.5\/92mm BB-MT800-PA Deore XT","offer_id":47596783108234,"sku":"IBBMT800PA","price":45.0,"currency_code":"SGD","in_stock":true},{"title":"MTB PF 89.5\/92mm SM-BB71-41A SAINT","offer_id":47596798967946,"sku":"ISMBB7141A","price":43.0,"currency_code":"SGD","in_stock":true},{"title":"MTB BSA 68\/73mm BB-MT501 Deore","offer_id":47596813418634,"sku":"EBBMT501B","price":35.0,"currency_code":"SGD","in_stock":true},{"title":"MTB BSA 68\/73mm BB-MT800-S Deore XT","offer_id":48011526668426,"sku":"IBBMT800B","price":40.0,"currency_code":"SGD","in_stock":true},{"title":"MTB BSA 68\/73mm BB-MT801-S Deore XT","offer_id":47596826230922,"sku":"IBBMT801B","price":45.0,"currency_code":"SGD","in_stock":true},{"title":"MTB BSA 68\/73mm SM-BB93 XTR","offer_id":47596807880842,"sku":"ISMBB93B","price":65.0,"currency_code":"SGD","in_stock":true},{"title":"Road PF 86.5mm SM-BB72-41B Ultegra","offer_id":47596869517450,"sku":"ISMBB7241B","price":43.0,"currency_code":"SGD","in_stock":true},{"title":"Road PF 86.5mm SM-BB92-41B Dura-Ace","offer_id":47597245005962,"sku":"ISMBB9241B","price":65.0,"currency_code":"SGD","in_stock":true},{"title":"Road BSA 68mm BB-RS501 Tiagra","offer_id":47597251657866,"sku":"EBBRS501B","price":35.0,"currency_code":"SGD","in_stock":true},{"title":"Road BSA 68mm SM-BBR60 Ultegra","offer_id":47596893864074,"sku":"ISMBBR60B","price":40.0,"currency_code":"SGD","in_stock":false},{"title":"Road BSA 68mm BB-R9100 Dura-Ace","offer_id":47597215711370,"sku":"IBBR9100B","price":65.0,"currency_code":"SGD","in_stock":true},{"title":"Road ITA 70mm SM-BBR60 Ultegra","offer_id":47596999573642,"sku":"ISMBBR60I","price":40.0,"currency_code":"SGD","in_stock":true},{"title":"Road ITA 70mm BB-R9100 Dura-Ace","offer_id":47597248282762,"sku":"IBBR9100I","price":65.0,"currency_code":"SGD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0554\/2379\/5338\/files\/P-SM-BB93.jpg?v=1769061651","url":"https:\/\/www.chapter2cycle.mom\/products\/shimano-bottom-brackets","provider":"Chapter 2 Cycle","version":"1.0","type":"link"}