BB30 bearings are only compatible with bicycle frames designed for this standard. The BB30 system is lighter, smaller, stiffer and more durable than traditional slides. The diameter of the bottom bracket axle and bearings has been enlarged, reducing weight by 12% and extending bearing life. An additional advantage of this system is the low Q-factor.
BB30 bearings are mounted in a special adapter that attaches to the frame. This system reduces the total weight of the crankset as well as the cartridge by about 20% while increasing the stiffness by about 10% and the smoothness of the crankset.The frame must have a 46mm diameter push-on bottom bracket muffle.
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