The high-quality Rotor BSA30 Ceramic bottom bracket cups allow the installation of 3D+ cranks with integrated 30mm axles in classic BSA threaded frames. High-quality Enduro silicone seals ensure buttery-smooth operation with unparalleled protection against dust, water and mud. It's the elegant new cup design which offers a sleek, modern look combining striking angles with smooth curves.
The BSA30 cups are not compatible with BB90 and BB89 frames!
Material: bearing cups: 7075 aluminium T6
Weight supplement: manufacturer information