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Questions & Answers (2) Q & A
Ok, so you have BB30 frame or a PF30 frame, but you need to run a Shimano crank?

No worries. Praxis Works Conversion BB is just what you're looking for. Made to fit in either BB30 or PF30 frame, the conversion BB is designed to be rock solid for a Shimano* Hollowtech II cranks to be installed in your frame.

*Designed for Shimano 24mm Hollowtech II cranks. Some Race Face and FSA 24mm spindle cranks also work

Praxis Works' patent pending aluminium shell design keeps the bearings outboard of the frame for greater rigidity and free of frame / cir-clip tolerance issues that other systems deal with. Simply press in the longer Non Drive Cup, then thread in the shorter drive cup. As the Drive Cup threads in, Praxis Works' trademark Collet Cuts spread out to evenly disperse pressure for a super tight fit. With both cups connected and using the collet cuts, there is no chance the bearings can come out of alignment or wiggle / walk out of the frame. This design also uses a compressible o-ring on the non-drive side cup to compensate for bottom bracket width discrepancies.

The Praxis Works design greatly reduces the chances for creaking and other unwanted noises associated with the lesser "Band Aid" type adaptors in the market. The cartridge bearings are high quality stainless steel with shield type quad-ring seals. Available in either 68 mm or 73 mm shell widths, the Converter can take care of your Road or MTB needs.

Note: 68 mm for road crank only. It cannot be spaced for use with MTB crank like a traditional threaded BB
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Questions & Answers (2)
Can I Fit A Praxis Bb To A Caad12 Frame?
04 May 2016
I believe this is 73mm BB30 and can I then use a standard Shimano crank such as a Ultegra 6800?.
SJS Customer Service:

If your frame is definitely BB30 then this Praxis Works BB will fit. To use a Shimano road crank like the Ultegra 6800 you'll need to select the 68mm option.

Praxis Works Adapter
30 Oct 2013
Hi ,

i m Theodor from ParisFrance (sorry for my bad english) , i placing a order to you right now , but i think maybe we have a little problem , because me i need a version of the Praxis Works adapter to Shimano model : BB30 (68x42)

not the PF30 (46x30)

i see the Praxis Works adapters models in he's special website , and i know the adapter PF30 model , he's have a compatibility to the BB30 (68x42) , but here in your site store , we cannot see this , when you add the product in your basket , so , if your adapter here , he's not good for me , please cancelled my order !

please answer me,
best regards,
SJS Customer Service:

The new PF30 ones can be used as BB30 ones also just by removing the outer shell. So you will be fine.