The crank would work in a PressFit 30 frame, but unfortunately a PressFit 30 bottom bracket is a completely different standard than BB30, so no, you can't put a PressFit 30 bb in your frame. The bore in the frame's bb shell is 42mm in diameter for BB30, 46mm for PressFit 30. The PressFit 30 bearings are the same size as BB30, and are designed for a 30mm spindle like BB30, but the bearings are encased in a nylon shell, and that's why they require the slightly larger diameter bore in the frame than BB30, to make room for the nylon casing. More and more frame makers are going away from BB30 and going to PressFit 30 because the frame tolerances aren't so absolutely critical like they are with BB30. The fact that the bearings are encased also makes for a better seal; again, we believe these bearings hold up very well.