{"product_id":"bike-components-groupsets-bottom-brackets-ceramicspeed-bottom-bracket-alpha-bearing-kit-for-bb90-shimano-road-115517","title":"CeramicSpeed Bottom Bracket Alpha Bearing Kit for BB90 Shimano Road | 115517","description":"\u003cp data-path-to-node=\"8\"\u003e\u003cb data-path-to-node=\"8\" data-index-in-node=\"0\"\u003eCeramicSpeed BB ALPHA Bearing Kit for BB90 Shimano Road: Advanced Mechanical Renewal and Minimum Drag\u003c\/b\u003e The engineered \u003cb data-path-to-node=\"8\" data-index-in-node=\"117\"\u003eCeramicSpeed BB ALPHA Bearing Kit for BB90 Shimano Road\u003c\/b\u003e stands as the definitive mechanical upgrade for the maintenance and optimization of premium \u003cb data-path-to-node=\"8\" data-index-in-node=\"265\"\u003eRoad Bikes\u003c\/b\u003e utilizing the BB90 integrated press-fit bottom bracket standard (exclusively found on Trek frames). Developed to sit directly into the carbon molded shell of the frame without the use of alloy cups, this premium kit interfaces natively with standard 24 mm spindle Shimano road cranksets. Installing these high-precision ceramic bearings optimizes the axial alignment of the crank axle, drastically reducing lateral flex under heavy loads and maximizing your overall drivetrain stiffness-to-weight ratio. To source high-end technical parts for your competitive build, browse our full inventory of \u003ca href=\"\/collections\/bike-components\" target=\"_blank\" rel=\"noopener\"\u003e\u003cem\u003e\u003cstrong\u003ePremium Bike Components and Spares\u003c\/strong\u003e\u003c\/em\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp data-path-to-node=\"9\"\u003e\u003cb data-path-to-node=\"9\" data-index-in-node=\"0\"\u003eAdvanced Metallurgy: Hardened Stainless Steel Races and 500% More Protection\u003c\/b\u003e Hand-built in Denmark, the BB ALPHA bearing platform features premium \u003cb data-path-to-node=\"9\" data-index-in-node=\"147\"\u003ehardened stainless steel races\u003c\/b\u003e across the entire range, providing absolute corrosion resistance and high-load performance under severe radial forces. Operating within these specialized races are high-precision Grade-3 Silicon Nitride (Si3N4) ceramic balls, which reduce rotational friction to an absolute minimum for direct wattage savings. To combat volatile road and weather environments, CeramicSpeed engineered custom light-contact seals paired with structural dust covers perfected over 28 design iterations. This advanced barrier setup provides a \u003cb data-path-to-node=\"9\" data-index-in-node=\"700\"\u003estaggering 500% increase in moisture and contamination protection\u003c\/b\u003e compared to legacy designs, fully sealing the internal rolling elements from water, mud, and road grit without introducing any mechanical friction or drag penalties. To analyze the manufacturer's official laboratory testing protocols, visit the \u003ca href=\"https:\/\/ceramicspeed.com\/\" target=\"_blank\" rel=\"noopener\"\u003eCeramicSpeed Official Website\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eTechnical Specifications \u0026amp; Compatibility Framework:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e\u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"0\"\u003eBearing Technology:\u003c\/b\u003e High-precision Grade-3 Silicon Nitride ceramic balls running on hardened, corrosion-resistant stainless steel races.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-path-to-node=\"11,1,0\" data-index-in-node=\"0\"\u003eSystem Architecture:\u003c\/b\u003e Direct-fit bearing kit (no external or internal aluminum cups), optimized for integrated carbon press-fit frame tolerances.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003e\u003cb data-path-to-node=\"11,2,0\" data-index-in-node=\"0\"\u003eShielding Interface:\u003c\/b\u003e High-stiffness structural POM plastic dust covers sitting completely flush with the outer bearing margin to prevent dirt penetration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,3,0\"\u003e\u003cb data-path-to-node=\"11,3,0\" data-index-in-node=\"0\"\u003eInternal Architecture:\u003c\/b\u003e Symmetrical internal tolerance design optimized with fewer variants for faster workshop installation and precise bearing-to-bearing alignment inside the carbon shell.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,4,0\"\u003e\u003cb data-path-to-node=\"11,4,0\" data-index-in-node=\"0\"\u003eFrame Standard Compatibility:\u003c\/b\u003e BB90 Press-Fit standard (90.5 mm shell width, specific to Trek road frames).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,5,0\"\u003e\u003cb data-path-to-node=\"11,5,0\" data-index-in-node=\"0\"\u003eCrankset Compatibility:\u003c\/b\u003e Engineered exclusively to host \u003cb data-path-to-node=\"11,5,0\" data-index-in-node=\"55\"\u003e24.0 mm spindle diameters\u003c\/b\u003e, fully matching Shimano Road cranksets and alternative 24mm axle configurations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"12\"\u003e\u003cb data-path-to-node=\"12\" data-index-in-node=\"0\"\u003eLong-Term Structural Performance: Lifetime Warranty and Dedicated UFO TECH Grease\u003c\/b\u003e The flawless manufacturing execution of the BB ALPHA allows the brand to back the component with an unconditional \u003cb data-path-to-node=\"12\" data-index-in-node=\"196\"\u003elifetime warranty\u003c\/b\u003e, ensuring a high-end drivetrain investment that frequently outlasts multiple frame lifetimes. The package comes fully equipped for immediate professional workshop installation, containing two BB ALPHA BB90 bearings, specialized dust covers, matching shims for precise clearance and preload configuration, a product decal, and a 5 ml syringe of UFO TECH All Round Bearing Grease, engineered to lower initial rolling resistance and stabilize high workloads under volatile riding conditions. To combine this premium bottom bracket upgrade with an updated racing \u003cb data-path-to-node=\"12\" data-index-in-node=\"773\"\u003egroupset\u003c\/b\u003e or an aerodynamic carbon \u003cb data-path-to-node=\"12\" data-index-in-node=\"807\"\u003ewheelset\u003c\/b\u003e, check out our selection of \u003ca href=\"\/collections\/bike-components-groupsets\" target=\"_blank\" rel=\"noopener\"\u003e\u003cem\u003e\u003cstrong\u003eRoad Bike Groupsets and Parts\u003c\/strong\u003e\u003c\/em\u003e\u003c\/a\u003e. If you require precise layout validation, please \u003ca href=\"\/pages\/contacts\" target=\"_blank\" rel=\"noopener\"\u003eContact Our Expert Technical Support Team\u003c\/a\u003e.\u003c\/p\u003e","brand":"CeramicSpeed","offers":[{"title":"Default Title","offer_id":43470458617974,"sku":"115517","price":286.07,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/0332\/7862\/files\/115517.webp?v=1780646298","url":"https:\/\/ciclicorsa.com\/products\/bike-components-groupsets-bottom-brackets-ceramicspeed-bottom-bracket-alpha-bearing-kit-for-bb90-shimano-road-115517","provider":"Cicli Corsa","version":"1.0","type":"link"}