PressFit 30 features an integrated seal, pre-assembled into the cups, to further prolong bearing life. Ceramic bearings are lighter, stiffer, and longer-lasting than normal bearings. The key difference with PressFit 30 is how the bearings are fitted into the frame. Bearings are housed in nylon cups which will be pressed into the frames bottom bracket shell. This bottom bracket is designed for 30mm spindle cranksets. Frames will need a 46mm inner-diameter bottom bracket shell to accommodate this system. PressFit 30 for road will require a 68mm wide shell while PressFit 30 for MTB will require a 73mm wide shell.
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