The ROTOR ITA Bearings Here you can choose between the various ROTOR ITA bearings. In total ROTOR has 4 types of ITA bearings. Here’s a rundown: BB1 Road ITA 24 mm – steel This is suitable for the 3D24 series and for other brands with a 24 mm shaft ITA30 30 mm – steel (incl. tool) ITA30 30 mm – ceramic (incl. tool) These are suitable for the REX1 and REX2 series, the Flow, the 3D , the 3D30 and all Powers and INpowers ITA24 Track 24 mm – steel ITA30 Track 30 mm – steel This is necessary for a ROTOR track crankset
