CeramicSpeed BB ALPHA
Best performance upgrade for dedicated gravel cyclists seeking ultimate efficiency.
This bottom bracket prioritizes longevity and weather resistance without sacrificing the low-friction performance expected from high-end ceramic components. It is an ideal upgrade for riders looking to minimize maintenance and maximize durability in harsh gravel conditions.
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Who it's for
- Performance-focused gravel riders seeking every watt advantage.
- Riders who frequently tackle challenging, dirty, and wet gravel routes.
- Cyclists prioritizing a refined, comfortable, and quiet pedaling feel.
Who should skip it
- Budget-conscious cyclists or those not prioritizing marginal gains.
- Home mechanics without specialized tools or professional experience.
- Recreational riders who value comfort over competitive edge.
Performance breakdown
Rotational Efficiency
Silicon Nitride ceramic balls deliver near-zero drag for effortless power transfer.
Weather Sealing
Custom seals and dust covers effectively block grit and moisture ingress.
Installation Ease
Simplified spacer design makes press-fit setup straightforward for home mechanics.
Component Durability
Hardened stainless-steel races ensure longevity even in harsh gravel conditions.
Weight Optimization
Lightweight cup construction sheds rotating mass without sacrificing structural integrity.
Compatibility Precision
Perfectly bridges 24mm cranks to 46mm shells with zero play.
Key Specs
Bearing Material
Silicon Nitride ceramic balls, Stainless steel races
Bottom Bracket Standard
PF30
Shell Diameter
46 mm
Shell Width
68 mm
Spindle Diameter
24 mm
Spindle Interface
Shimano
Sealing Type
Custom-engineered seals, Precision dust covers
Water Resistant
Yes
Ceramic Bearings
Yes
Intended Use
Gravel
Know before you buy
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Ask Metto anything about the CeramicSpeed BB ALPHA before you decide.