CeramicSpeed BB ALPHA for T47/86 30mm Road

 

The CeramicSpeed BB ALPHA for T47/86 30mm Road is a flagship ceramic bottom bracket from Denmark, designed for frames with a T47 threaded bottom bracket shell (85-86mm width) paired with 30mm axle cranksets, with bearings placed inboard. Featuring grade-3 Silicon Nitride ceramic balls with hardened stainless-steel races, a 28-iteration seal design delivering 500% improved moisture protection, hand-built in Denmark, and backed by a lifetime warranty. Compatible with cranksets from SRAM, Easton, FSA, Rotor, Cannondale, and Race Face.

BB ALPHA is a bottom bracket built to outlast your frame. CeramicSpeed has distilled decades of ceramic bearing expertise into this flagship product, with every detail from material selection to sealing architecture rigorously tested and optimised.

Each BB ALPHA unit is hand-assembled by specialist technicians at the CeramicSpeed factory in Holstebro, Denmark. At its core are grade-3 Silicon Nitride ceramic balls — a high-performance material widely used in aerospace and precision engineering, offering exceptional hardness, superior surface finish, and outstanding corrosion resistance. These ceramic balls are paired with specially hardened stainless-steel races to deliver consistent, ultra-low rolling friction.

The sealing system represents a major breakthrough for BB ALPHA. The CeramicSpeed engineering team developed a custom seal and precision dust cover combination through 28 design iterations, achieving up to 500% better moisture and contamination protection compared to previous generations while maintaining minimal rotational drag. This means the bearing internals remain clean and dry even when riding in wet or harsh weather conditions, significantly extending service life.

The newly simplified spacer tube design reduces part count, making installation quicker and more straightforward. Meanwhile, the redesigned cup material and structure achieve a 10% weight reduction over previous generations, offering a meaningful advantage in weight-critical racing applications.

This product is designed specifically for frames with a T47 threaded bottom bracket shell measuring 85-86mm in width, with bearings placed inboard. The T47 standard is a modern BB standard that combines the reliability of threaded installation with the larger bore diameter advantages of oversized BB shells. The 86mm shell width represents the standard symmetric T47 design, compatible with the vast majority of road frames adopting this standard. Threaded installation means no pressing is required, making fitting and removal more convenient, friendlier to the frame, and significantly reducing the risk of creaking associated with poorly fitted press-fit units.

This model is compatible with 30mm axle cranksets from multiple brands including SRAM, Easton, FSA, Rotor, Cannondale, and Race Face, providing excellent flexibility in crankset selection.

Please note: This product is not compatible with THM cranks.

All BB ALPHA products are backed by the CeramicSpeed Lifetime Warranty.

Key Features

Grade-3 Silicon Nitride Ceramic Balls (CeramicSpeed Balls)
Manufactured from aerospace-grade Silicon Nitride, these balls offer exceptional hardness and superior surface finish, dramatically reducing rolling friction and significantly extending bearing service life. Compared to traditional steel balls, ceramic balls are lighter, have a lower thermal expansion coefficient, and offer superior corrosion resistance.

Hardened Stainless-Steel Races
The races undergo a special hardening treatment for outstanding wear and corrosion resistance. The stainless-steel material is inherently corrosion resistant by design, ensuring stable ultra-low friction performance over extended use.

28-Iteration Precision Dust Covers
Custom-designed dust covers refined through 28 design iterations achieve the optimal balance between fitment and protection, effectively blocking external contaminants from entering the bearing interior.

500% Moisture Protection Improvement
The custom-engineered sealing system has been laboratory-tested and proven to deliver 500% better protection against moisture and contamination versus previous generations, significantly extending bearing lifespan across all weather conditions.

Lightweight Cup Design
Cup material and structure have been redesigned and optimised to achieve weight reduction while maintaining adequate strength, delivering a 10% overall weight saving compared to previous generations.

Super-Light Spacer Tube Design
The simplified spacer system achieves greater versatility and installation convenience with fewer part variants, while further reducing weight.

T47/86 Threaded Installation (Inboard Bearings)
The T47 standard employs threaded installation, combining the large-diameter BB shell capacity with the convenience of traditional threaded bottom brackets. The 86mm shell width represents the standard symmetric T47 design with bearings placed inboard. Compared to press-fit designs, threaded installation is more frame-friendly, less prone to creaking, and does not require expensive dedicated press tools for fitting or removal.

Multi-Brand 30mm Axle Crankset Compatibility
Supports 30mm axle cranksets from SRAM, Easton, FSA, Rotor, Cannondale, and Race Face, giving riders exceptional flexibility in crankset selection — upgrade or swap cranksets without needing to change your bottom bracket.

Lifetime Warranty
All BB ALPHA products are covered by the CeramicSpeed Lifetime Warranty, safeguarding your investment for the long term. Simply install and maintain according to official guidelines to enjoy lifetime warranty coverage.

Hand-Built in Denmark
Every bearing is individually assembled and quality-inspected by specialist technicians at the CeramicSpeed factory in Holstebro, Denmark, ensuring every unit shipped meets the highest standards.

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Specifications

SKU: 115437
Barcode: 5711050143122
Product Line: BB ALPHA
BB Type: T47 Threaded (86mm shell width, inboard bearings)
Frame BB Shell Width: 85-86mm
Axle Diameter: 30.0mm
Compatible Crank Brands: SRAM, Easton, FSA, Rotor, Cannondale, Race Face
Not Compatible With: THM cranks
Discipline: Road, Tri, and Track
Net Weight: 86g
Gross Weight (with packaging): 205g
Colour: Black
Origin: Denmark
Warranty: CeramicSpeed Lifetime Warranty

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Compatibility

This product is compatible with all frames featuring a T47 standard threaded bottom bracket shell measuring 85-86mm in width, paired with 30mm axle cranksets, with bearings placed inboard. Compatible crankset brands include SRAM, Easton, FSA, Rotor, Cannondale, and Race Face. Please note this product is not compatible with THM cranks. Ensure your frame's BB shell width measures 85-86mm (not the 77mm T47a asymmetric standard). T47 is a threaded standard (not press-fit), requiring a suitable bottom bracket socket tool for installation. It is recommended to consult the CeramicSpeed official compatibility matrix and spacer chart before installation to confirm suitability for your specific frame and crankset combination, and to ensure your chosen crankset has adequate axle length.

 

In the Box

BB ALPHA for T47/86 30mm Road bottom bracket, Spacer Kit, UFO TECH All Round Bearing Grease 5ml, CeramicSpeed Decal.

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Recommended Tools

The CeramicSpeed Dual Socket Tool T45 Colnago/T47 is recommended for installing T47 threaded bottom brackets to ensure the cups are threaded in to the correct torque with precise alignment for optimal performance and warranty validity.