Ceramicspeed bottom bracket BB ALPHA T47/86 85-86 mm width SRAM DUB Road 28.99 29 mm spindle road 115438

CeramicSpeed BB ALPHA T47/86 SRAM DUB Road Bottom Bracket

The CeramicSpeed BB ALPHA T47/86 SRAM DUB Road Bottom Bracket is a premium threaded T47/86 bottom bracket designed for SRAM DUB cranksets with a 28.99 mm axle. It is engineered for ultra-low friction, high durability, and long-term reliability, making it suitable for high-performance road, triathlon, and track use.

The BB ALPHA series represents CeramicSpeed’s latest evolution, offering improved sealing, simplified installation, and reduced weight, while maintaining its signature smooth bearing performance.

Key Features

• Designed for T47/86 threaded frames (85–86 mm width)
• Compatible with SRAM DUB cranksets (28.99 mm axle)
• Ultra-low friction performance
• Lifetime warranty
• Up to 500% improved moisture protection
• Lightweight and serviceable design
• Simplified setup with included DUB spacer kit

Technology & Construction

• Hardened stainless-steel bearing races for corrosion resistance
• Grade-3 Silicon Nitride ceramic balls
• Custom light-contact seals for optimal balance of efficiency and protection
• Stainless-steel reinforced seal backing
• High-stiffness POM dust covers with optimized fit
• 7075 aluminum cups for reduced weight and increased strength
• Optimized bearing placement for better contamination resistance
• Approximately 10% lighter than previous generations

Technical Specifications

In the box

• CeramicSpeed BB ALPHA T47/86 SRAM DUB Road bottom bracket
• DUB spacer kit
• UFO TECH All Round Bearing Grease (5 ml)
• Decal

In practice

This bottom bracket is designed for riders using SRAM DUB cranksets in T47/86 threaded frames, delivering maximum efficiency, excellent sealing against moisture, and very long service life. It is especially suited for demanding road, triathlon, and endurance racing setups.