Ceramic BSA bottom brackets: match the bearings to your crankset.
BSA threading remains a strong choice for high-end road bikes. A compatible ceramic bottom bracket adds carefully selected bearings and quality finishing — without changing your frame or crankset.
24 · DUB · 30Three spindle families, different bottom brackets
STEP 1 · IDENTIFY YOUR CRANKSET
Your frame is BSA. Now match the spindle.
A BSA frame alone does not determine which bottom bracket you need. Shimano 24 mm, SRAM DUB 28.99 mm and Rotor 30 mm crank spindles require different bearing interfaces.
SHIMANO · ROTOR 24
BSA ceramic 24 mm
For Shimano 105, Ultegra and Dura-Ace, plus compatible Rotor Aldhu24/Vegast24 cranksets. Check your exact crankset specification.
BSA, ceramic bearings and compatibility: what matters.
A proven threaded standard
The cups screw into the frame instead of being pressed into place. Road BSA shells are commonly 68 mm wide; some gravel and MTB applications use 73 mm. Always confirm your exact frame specification.
Velo-Perso advice
Ceramic bearings may help reduce friction under suitable conditions, but sealing, grease, preload and maintenance all matter. A high-quality steel bottom bracket can sometimes be the more practical purchase.
Can I replace a Shimano BSA steel bottom bracket with ceramic?
Yes, provided your frame uses BSA threading and the replacement is designed for your Shimano 24 mm spindle. Confirm the shell width and fitting requirements too.
Can I use a 30 mm BSA bottom bracket for SRAM DUB?
No. SRAM DUB uses a nominal 28.99 mm spindle. Choose the dedicated BSA DUB model instead.
Does a BSA bottom bracket eliminate all creaking?
No. Threaded cups reduce some shell-tolerance issues, but creaking can also come from improper tightening, frame threads, pedals or other interfaces.
How does BSA differ from BB86 and T47?
These are different frame bottom bracket standards. Even with the same Shimano 24 mm crankset, the bottom bracket must match your frame.
Is the installation tool included in 2026?
Not always. Some newer CyclingCeramic threaded models are sold without an installation tool. Check the exact product description and cup-tool specification.
How much efficiency gain do ceramic bearings provide?
Friction losses may be lower in some conditions, but there is no guaranteed watt saving for every setup. Installation quality and sealing can be just as important.
Looking for a reliable solution at a lower price? Compare BSA steel bottom brackets, or browse the complete ceramic bottom bracket range.