BB ALPHA T47 SRAM DUB interne Route
The CeramicSpeed BB ALPHA for T47/86 SRAM DUB Road pairs hardened stainless-steel races with hand-built grade-3 Silicon Nitride ceramic balls for smooth, consistent rotation. Custom seals and precision dust covers work together to protect against moisture and road debris, keeping the bearings running cleanly through varied riding conditions on road, triathlon, and track bikes.
Lighter 7075 aluminum cups and a simplified spacer tube trim weight compared to earlier generations, while stiff POM dust covers sit flush with the cup edge to reduce debris ingress. Built for threaded T47 86mm shells with SRAM DUB cranksets, this bottom bracket is backed by a lifetime warranty.
Quick Facts
| Feature | Specification |
|---|---|
| BB Type | T47 86mm |
| Crankset Compatibility | SRAM DUB, 28.99 mm axle |
| Frame Compatibility | Threaded T47 frames, 85-86mm wide, inboard bearings |
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