Originally Posted by
primov8
Praxis does have a great conversion bb for pf30s but its only for shimano hollowtech cranks(24mm spindles). They also have their new M35 bb system which works in bb30/pf30 but its proprietary to their 35mm spindle cranks or shimano cranks with the use of adapters.
A discussion with a Praxis rep on another forum divulged that Praxis is working on additional BB's based upon their excellent collet design which is quite clever and non invasive because it expands radially versus relying upon a press which as Psimet stated will degrade BB30 bores...or PF30 hard carbon shells over time. What Specialized has done this year is develop spacer/adapters that adapt Campy cranks to their BB's...which work much better than Campy's press in cups which work pretty awful. I believe you will see from Praxis moving forward a BB design that will adapt Campy cranks to BB/PF30. This will be very popular I believe. Campy cranks have a 25mm OD spindle and hence only a very slight change to adapt them using their BB.