CeramicSpeed T47a for SRAM DUB Bottom Bracket

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T47a for 77mm asymmetrical shell.



T47a is a threaded bottom bracket shell design, utilizing the oversized interface of BB right, but with the benefit and peace of mind of a threaded interface. Compatible frames feature an asymmetrical 77mm shell width, placing the non-drive side bearing within the frame, and the drive side bearing externally.



Equipped with precision dust covers for a snug & secure fit that also fully protects the face of the bearing delivers exceptional performance without any sacrifices. CeramicSpeed hand-built bearings carry the load from crank to frame with un-paralleled durability & efficiency.



Bottom Bracket tool for installation: CeramicSpeed Dual Socket Tool T45/T47 16-notch 52,2mm cup tool diameter.



Did you know that this product has a lifetime warranty? That's right: as of September 1, 2021, all CeramicSpeed 'Coated' products and OSPW cages (purchased after January 1, 2021) are covered for life -- that's how confident CeramicSpeed are in the durability of their products. You can check out the full terms and conditions here.





Technologies



T47a is an open standard designed to provide the benefits of both oversized shells and the tight fit of threading. These cups and bearings adapt the shell so it is compatible with 24mm diameter spindle cranks.



Their CeramicSpeed Standard Bearings reduce drag by 75% when compared to stock bottom brackets. Down to 0.3-0.4 watts per set. This is the result of hardened-steel races combined with CeramicSpeed Balls that are 100% smoother and 15% harder than the ceramic competition. They also last longer.



The CeramicSpeed coated Bearings feature an even longer lifespan and even lower drag. Life increases by 60% and drag drops by 50% compared to our CeramicSpeed Standard Bearings.



Applied to the bearings at the factory is All Round Grease. It can be replaced for lower drag TT and Track Grease, or higher durability LongLife Grease, which adds a bit of drag but stays in when riding through messy conditions.



What's in the Box?



2 cups with CeramicSpeed bearings and dust covers

2-part spacer tube

CeramicSpeed All Round Grease packet

Spacers for setup & adjustments

Sticker sheet



Bottom Bracket Compatibility Matrix





* 30 mm cranks with a short spindle may have limited compatability.

** Does not fit a FSA crank from 2016 or newer.

*** Only BB30 fits shell width of 83 mm.