This bottom bracket features a shallower insert compared to our regular PF30-386, which makes it perfect for metal frames with internal wires or carbon frames with a reduced contact area in the bottom bracket shell. It will fit most 30mm crank spindles on a PF30 frame. It moves the bearings out of the frame in order to make a wider and stiffer set up. Bearing wear is greatly reduced with this wider set up compared to a standard PF30 setup with spacers. Fits Rotor 30mm, RaceFace Cinch, Easton, 386EVO, BB30. Campagnolo Over Torque. Choose road bearings for road bikes, cross bearings for mountain bikes and cyclocross. Cranks that will not fit with this bottom bracket: traditional (pre 2014) BB30 cranks with short spindles and Specialized FACT. For these cranks, please have a look at our PF30L bottom bracket