SRAM Team English Thread GXP Bottom BracketSRAM Team English Thread GXP Bottom Bracket PressFit bottom bracket design is a variant of the external bottom bracket. Instead of threading bearing cups into a frame, the bearing cups are simply pressed into the frame. With PressFit, there is no change to the crank the spindle length and diameter remain the same. Gutter seal technology: GXPs Gutter Seal design cuts friction and weight, improving both feel and performance Threaded bottom bracket