{"product_id":"wolf-tooth-alsl-52100-custom-86-mm-shimano-hollowtech-ii-bottom-bracket-btbk1255-bicycle-bottom-brackets","title":"Wolf Tooth BSA Bottom Bracket - 68 - 73mm, 24mm Spindle, Raw Silver, Engineered for Smooth Power Transfer, Durable Chrome Bearings, Weather Sealing, and Easy Installation","description":"\u003cdiv id=\"seqbpdescription-1\"\u003e\u003cp\u003eExperience superior performance and durability with the Wolf Tooth Bottom Bracket - English (BSA), 68\/73mm, designed for 24mm spindles. Crafted in the USA from premium materials, this bottom bracket combines advanced engineering, innovative components, and a sleek, raw silver finish to elevate your ride.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-2\"\u003e\u003cp\u003eMaterials \u0026amp; Construction:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-3\"\u003e\u003cp\u003eBuilt with 6061-T6 aluminum shells and precision-machined AISI 52100 chrome bearing steel balls and race components, the Wolf Tooth BSA Bottom Bracket offers exceptional strength and durability. An innovative ACOSUR ZNA coating provides superior corrosion resistance, tested to withstand over 500 hours in saltwater environments, ensuring reliable performance in all conditions. The use of high-grade polymers and resilient seals guarantees long-lasting operation amidst water, mud, and trail debris.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-4\"\u003e\u003cp\u003ePerformance \u0026amp; Engineering:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-5\"\u003e\u003cp\u003eDesigned for low drag and smooth pedaling, this bottom bracket features custom bearings with hardened chrome steel balls to reduce friction and noise. Its optimized radial compression, precise alignment, and preload settings lead to efficient power transfer and minimal resistance. The best-in-class weather sealing protects internal components, preventing creaking and extending service life. The user-serviceable design ensures easy maintenance and replacement of parts, supported by Wolf Tooth's comprehensive service guides and lifetime warranty.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-6\"\u003e\u003cp\u003eComponents \u0026amp; Technology:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-7\"\u003e\u003cp\u003eEquipped with custom polymer spindle bushings that eliminate creaking and prolong crankset lifespan, this bottom bracket supports multiple spindle diameters-24mm, 29mm DUB, and 30mm-covering a wide range of crankset compatibilities including Shimano Hollowtech II and RaceFace EXI. An adjustable-width internal sleeve seamlessly fits 68mm and 73mm BSA shells, with optional sleeves for 83mm and 100mm widths to accommodate diverse frame geometries. Installation and removal are simplified with standard spline tools (44-16 for 24mm spindles, 46-12 for 29mm DUB and 30mm spindles).\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-8\"\u003e\u003cp\u003eStyle \u0026amp; Use Case:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-9\"\u003e\u003cp\u003eFeaturing a sleek raw silver finish, this bottom bracket seamlessly integrates with any bike aesthetic-from XC and trail to enduro. Whether upgrading your mountain bike or building a custom gravel rig, the Wolf Tooth BSA Bottom Bracket offers reliable, high-performance support for aggressive riding, touring, or casual commuting.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-10\"\u003e\u003cp\u003eInnovative \u0026amp; Differentiating Features:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-11\"\u003e\u003cp\u003e- Custom-designed AISI 52100 chrome bearing steel for enhanced durability and reduced resistance\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-12\"\u003e\u003cp\u003e- Superior weather sealing and saltwater resistance for rugged riding conditions\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-13\"\u003e\u003cp\u003e- Creak-preventing polymer bushings for quiet, smooth operation\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-14\"\u003e\u003cp\u003e- Versatile compatibility with 68\/73\/83\/100mm shells and multiple spindles for maximum flexibility\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-15\"\u003e\u003cp\u003e- Made in the USA with meticulous craftsmanship, supporting the right to repair with easy access to replacement parts\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-16\"\u003e\u003cp\u003eTechnical Specifications:\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-17\"\u003e\u003cp\u003e- Shell I.D.: 33.6mm x 24 TPI\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-18\"\u003e\u003cp\u003e- Spindle Diameters: 24mm, 29mm DUB, 30mm\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-19\"\u003e\u003cp\u003e- Shell Widths: 68mm, 73mm (additional widths available as add-ons)\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-20\"\u003e\u003cp\u003e- Weight: 83g (including complete assembly without spacers)\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-21\"\u003e\u003cp\u003e- Material: 6061-T6 aluminum, chrome bearing steel, resilient seals\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-22\"\u003e\u003cp\u003e- Compatibility: Shimano Hollowtech II, RaceFace EXI, BSA shells\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpdescription-23\"\u003e\u003cp\u003eUpgrade your bike with confidence-choose the Wolf Tooth Bottom Bracket for unmatched durability, precision, and style. Built for riders who demand the best in performance and longevity.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"seqbpfeatures\"\u003e\u003cul\u003e\n\u003cli\u003e Crafted from high-strength 6061-T6 aluminum with durable chrome-bearing steel (AISI 52100) races, ensuring long-lasting performance and corrosion resistance in all riding conditions. \u003c\/li\u003e\n\u003cli\u003e Engineered with best-in-class weather sealing, the Wolf Tooth Bottom Bracket effectively protects bearings from water, mud, and trail debris, reducing maintenance and extending lifespan. \u003c\/li\u003e\n\u003cli\u003e Features advanced custom bearings and seals, utilizing hardened chrome steel balls and ZNA coating, which minimizes friction, noise, and resistance for smoother pedaling and improved efficiency. \u003c\/li\u003e\n\u003cli\u003e Compatible with 68\/73mm BSA bottom bracket shells and available for 24mm, 29mm, and 30mm spindle diameters, providing versatile fitment for a wide range of bike frames and cranksets. \u003c\/li\u003e\n\u003cli\u003e Designed for easy installation and removal with standard spline tools, plus adjustable-width sleeves for precise fitment, making it ideal for mountain biking, gravel, and road cycling enthusiasts seeking reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e","brand":"Wolf Tooth","offers":[{"title":"Default Title","offer_id":42328063737923,"sku":"BTBK1255","price":129.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1608\/6187\/files\/CR4665.jpg?v=1779347620","url":"https:\/\/365cycles.com\/products\/wolf-tooth-alsl-52100-custom-86-mm-shimano-hollowtech-ii-bottom-bracket-btbk1255-bicycle-bottom-brackets","provider":"365 Cycles","version":"1.0","type":"link"}