CeramicSpeed BB ALPHA for T47/68 SRAM DUB Road

 

Danish-made flagship ceramic bottom bracket for T47 threaded frames (68mm shell width) paired with SRAM DUB road cranksets. Grade-3 Silicon Nitride ceramic balls, hardened stainless-steel races, 500% moisture protection improvement, 114g, hand-built in Denmark with lifetime warranty.

 

BB ALPHA is CeramicSpeed's flagship bottom bracket line, engineered to outlast your frame. This model fits T47 threaded frames with a 68mm shell width and outboard bearing placement, paired with SRAM DUB 28.99mm axle road cranksets. It is designed for road, triathlon, and track disciplines.

The bearing core uses grade-3 Silicon Nitride (Si₃N₄) ceramic balls paired with hardened stainless-steel races. The ceramic balls offer an exceptionally smooth surface and far greater hardness than steel, resulting in ultra-low friction and outstanding longevity. The hardened stainless-steel races are inherently corrosion resistant — ideal for riding in Hong Kong's hot and humid conditions.

Protection is where BB ALPHA truly excels. Custom-engineered seals and precision dust covers were refined through 28 design iterations for optimal fitment, delivering 500% better moisture and contamination resistance than conventional designs. This dramatically extends bearing life, even through regular rain rides and bike washes.

Structurally, the cups feature optimised material and geometry for maximum strength at reduced weight, while a simplified spacer tube design uses fewer parts for quicker, more intuitive installation. Together, these changes achieve a 10% weight saving over the previous generation.

T47 is a modern threaded BB standard that combines the wider shell of press-fit with the installation reliability and serviceability of traditional threads, eliminating the creaking issues common with press-fit. It is adopted by Trek, Cervélo, Factor, Allied, Ventum, and more.

Every BB ALPHA is hand-assembled and quality-checked at CeramicSpeed's factory in Holstebro, Denmark, and is backed by a lifetime warranty for ultimate peace of mind.

 

 

Key Features

• Ultra-Low Friction: Grade-3 Si₃N₄ ceramic balls with hardened stainless-steel races for dramatically lower drag than steel bearings
• 500% Moisture Protection: Custom seals and dust covers refined through 28 iterations to block water and contamination
• Corrosion Resistant: Hardened stainless-steel races resist rust — perfect for humid climates
• Lightweight: 114g net weight — 10% lighter than the previous generation through optimised cups and spacer tube
• Quick Installation: Simplified spacer tube with fewer parts for intuitive fitting
• Serviceable: Seals and dust covers are independently replaceable — no need to replace the entire unit
• T47 Threaded: Eliminates press-fit creak with reliable threaded engagement
• Lifetime Warranty: Official CeramicSpeed lifetime warranty

In the Box

• BB ALPHA for T47/68 SRAM DUB Road × 1
• DUB Spacer Kit × 1
• UFO TECH All Round Bearing Grease 5ml × 1
• CeramicSpeed Decal × 1

Frame Compatibility

T47 threaded frames with 68mm shell width, commonly found on Trek, Cervélo, Factor, Allied, Ventum, Parlee, and others.

⚠️ T47 comes in different shell widths and bearing placements (inboard/outboard). This product is specifically for 68mm outboard configurations. Please verify your frame's BB shell marking or consult the frame spec sheet before ordering.

Crank Compatibility

All SRAM DUB road cranksets (28.99mm spindle): RED, Force, Rival — all generations.

Recommended Accessories

• CeramicSpeed Dual Socket Tool T45 Colnago/T47  (installation tool)
• CeramicSpeed Preload Ring for SRAM DUB  (crank preload ring)
• Crank Bolt Removal Tool  (crank bolt removal tool)