BBInfinite have finally brought their ultra-smooth ultra-durable one-piece bottom bracket technology to the T47 standard. Most modern road frames stand to benefit from the addition, with fitments for 30mm spindle, DUB, GXP, Praxis M30, and Shimano HollowTech2 crank systems.
BBInfinite T47 BB
The new range of T47 bottom brackets from BBInfinite feature the very same technology we see on their famously creak-free pressfit bottom bracket designs (check out Tyler’s review here). Both the internal and external T47 variants boast continuous tube structures end-to-end, ensuring perfect, coaxial bearing alignment.
Thus, when it comes to BBInfinite, the creak-free silent advantage of the T47 BB over a PressFit BB doesn’t apply. The brand already solved creaking problems with the one-piece PressFit design.
The only advantage that threads bring to the table in this case is this… With PressFit, the bearings are subjected to radial compression, especially with very tight-fitting bottom brackets. The play inherent in any threaded fitment means the bearings inside the tube structure won’t be subject to imperfections on the inner diameter of a frame’s BB shell. Infinite gives us a nice visual of that concept in this video.
All BBInfinite T47 bottom brackets will be very familiar to anyone who ever installed a cartridge system like an ISIS or square taper BB. They run a threaded assembly that all goes in from one side and is stabilized and secured by a polymer ring that threads in from the other.
Each fully assembled, ready-to-install bottom bracket module ships with the necessary parts, special socket, and hardware to get the job done. There are no adapters or shims to mess around with.
You simply install the BB, then the crank, and you’re done. Fitments for every crank system (except for Campagnolo) can be had in 86.5mm internal, Trek’s 85.5mm internal, Factor’s BBcorrect, and in 68mm-width external versions.
Pricing & Availability
BBInfinite offer T47 in three bearing choices: ABEC-7 steel, their hybrid Ceramitech, or their WS2 (Tungsten Disulfide) coated Ceramitech option. The ABEC-7 steel option is the cheapest at $200. The hybrid Ceramitech option will set you back $255 whereas the WS2-treated Ceramitech BB retails at a lofty $325.
