BSA Shimano Road Ceramic Bottom Bracket
AITA BSA Shimano road ceramic bottom bracket is fully compatible with Shimano Dura Ace, Ultegra and FSA 24mm spindle crankset. It is an English thread bottom bracket with AITA signature hybrid ceramic bearings built up with Grade 3 Si3N4 ceramic balls and ABEC7 hardened steel races.
With the Grade 3 Si3N4 ceramic balls (8 times rounder and 4 times smoother than the steel's), spinning on the hardened ABEC 7 races, AITA's ceramic bearings run much smoother than most of the bearings in the market. This ceramic bottom bracket only consumes 21% of the power vs Shimano Dura Ace 7900, Dura Ace 9000 and Ultegra in average, plus the bearings will last 3-5 times longer than the steel bearings.
Unique designed dust cover improves the durability of the bottom bracket compared with the traditional Shimano design.
2 year warranty.
Specifications:
CNC aluminium external bottom bracket cups;
ABEC7 high chrome vacuum degassed bearing steel races with quenching and tempering hardening;
Grade 3 Si3N4 ceramic bearing balls; Nylon bearing retainer;
Dual lips light contact rubber bearing seals;
Frame requirements:
BSA 1.37"x24TPI English Thread;
68mm width;
Crankset compatibility:
24mm spindle cranksets;
i.e. Dura Ace (9000), Dura Ace Di2 (7900), Dura Ace (7900/7800), Ultegra Di, Ultegra (6800/6700/6600), Ultegra SL, 105 10 (5600/5700), Shimano Compact, FSA Gossamer etc.
Weight:
86g
- Frame requirement:
- BSA 1.37"x24TPI English Thread; 68mm width
- Crank compatibility:
- 24mm spindle cranks: Shimano Dura Ace,Ultegra,FSA
Reviews
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Phenomenal Service and Staff!
I recently experienced some unexpected roughness in my AITA bottom bracket while travelling overseas and needed to have it replaced so I could keep riding. I contacted Shane at AITA Ceramic, and the support I received was incredible. He went well above and beyond anything I expected, taking the time to explain what may have caused the issue and showing me how I could assess the bearings myself. Because I was overseas and unable to investigate properly, he asked me to send them back when I returned home. Once Shane received the bearings, his attention to detail was exceptional. He had both bearings thoroughly inspected, explained the possible reasons why one had begun running rough, and arranged for the bearings to be replaced and the reducer sleeve refitted, all free of charge. Things can occasionally go wrong with any product. What matters is how the company responds, and I’ve never encountered a cycling-related business as helpful, thorough and supportive as AITA Ceramic. Shane is a phenomenal asset to the business, and AITA genuinely stands behind its products and its customers. I cannot recommend them highly enough.
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Aitaceramic bottom bearing
I’m very happy with the bottom bearing from aitaceramic . The bearing roll very smooth. It’s help us to lighter the pedal efficient. Consider save watt.. surely it’s recommend for everyone
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Highly recommended
Great seller. Highly recommended.
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Free rolling
As they have proven superior free spinning qualities unlike any other.
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Good bearing
A lighter person saves a lot of wattage power pushing ceramics against normal bearings due to the freer rolling resistance.