CeramicSpeed BB ALPHA T47
Top Pick
CeramicSpeed

CeramicSpeed BB ALPHA T47

4.5

Best premium upgrade for cyclists seeking maximum drivetrain efficiency and longevity.

This high-performance bottom bracket minimizes friction to squeeze every watt of efficiency out of the drivetrain. With advanced sealing and durable ceramic internals, it offers a significant upgrade in both longevity and smoothness for demanding road cyclists.

Shell Diameter Mm 46
Shell Width Mm 86
68
86
Spindle Diameter Mm

Who it's for

  • Competitive cyclists seeking maximum efficiency and marginal gains
  • High-mileage riders wanting a reliable, long-lasting drivetrain component
  • Performance athletes who prioritize a quiet and stable ride

Who should skip it

  • Budget-conscious cyclists looking for basic functional replacements
  • Casual commuters who prefer a set-and-forget maintenance approach
  • Home mechanics without access to professional-grade cycling tools

Performance breakdown

Drivetrain Efficiency

Ceramic bearings drastically reduce drag for a noticeably smoother pedal stroke.

Excellent

Weather Resistance

Custom seals effectively block grit and moisture from compromising internal components.

Excellent

Weight Optimization

Lightweight aluminum construction sheds grams without sacrificing structural integrity.

Excellent

Installation Simplicity

Simplified spacer design makes setup straightforward for most home mechanics.

Excellent

Component Durability

Hardened stainless races ensure longevity even under high-wattage riding conditions.

Excellent

Bearing Precision

Grade-3 Silicon Nitride balls offer industry-leading tolerances for consistent rotation.

Excellent

Key Specs

Weight

89 grams

Material

Ceramic, Stainless Steel, 7075 Aluminum, POM Plastic

Bearing Material

Ceramic, Stainless Steel

Bottom Bracket Standard

T47

Shell Diameter

46 mm

Shell Width

86 mm

Spindle Interface Type

SRAM DUB

Sealing Type

Custom light contact seals

Water Resistant

Yes

Know before you buy

Still have a question?

Ask Metto anything about the CeramicSpeed BB ALPHA T47 before you decide.