CeramicSpeed BB ALPHA Road Bottom Bracket - EVO386, 86.5mm, for 24mm/Shimano Spindle sets a new performance standard for riders who demand long-lasting efficiency and smooth power transfer. Built to outlast the frame it’s installed in, this bottom bracket combines low-friction ceramic performance with exceptional durability for consistent results on every ride.
Hand-built in Denmark, the BB ALPHA uses grade-3 Silicon Nitride ceramic balls rolling on hardened stainless-steel races for unmatched efficiency and corrosion resistance. The updated design places bearings farther outboard for improved stiffness and load handling, while a redesigned internal race enhances support under preload. Custom-engineered seals and precision dust covers keep out moisture and debris, improving protection by up to 500% without compromising the signature CeramicSpeed smoothness.
A simplified spacer tube and lighter 7075 aluminum cups cut weight by 10% compared to previous versions, making installation straightforward and performance-focused. Ideal for riders who value longevity, precision, and every watt of saved energy.
Hardened stainless-steel races and grade-3 Silicon Nitride ceramic balls deliver low friction and long-term durability
Advanced sealing system provides up to 500% better moisture protection for reliable performance in all conditions
Revised bearing placement increases stiffness and protection from contaminants
Lightweight 7075 aluminum cups reduce weight by 10% and simplify installation
Hand-built in Denmark and backed by a lifetime warranty
Specifications & Identifiers
Bottom Bracket Shell I.D.
36mmx24tpi
Bottom Bracket Shell Width (mm)
86
Bottom Bracket/Frame Interface
386 EVO (BB386)
Defined Color
Black
Spindle Interface Type
FSA MegaExo, RaceFace EXI, Shimano Hollowtech II
Spindle Length (mm)
Integrated Spindle
Weight
97
Black - One Size UPC
5711050143085
Black - One Size MPN
115433
Tree Fort ID:
333222474964
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