Praxis is the best solution to mounting a DA crank on a PF30 bike.
I wouldn't even call it an adaptation. It is more like a rock solid equivalent to DA threaded cups on BSA frame.
The only thing that separates it from a DA crank on a BSA frame, is DA threaded cups are cheaper than the Praxis collet BB with integrated bearings.
The only better BB/PF30 Praxis BB is their sleeve for Campy cranks. This is because bearings are not integral to the collet sleeve with cups which allows usage of Campy bearings which can be replaced independently of the sleeve. This reduces replacement cost by $50 because you don't have to replace the sleeve with the bearings.
Last edited by Campag4life; 12-09-14 at 05:51 AM.