The SRAM BB GXP Team PressFit mtb BB92is low in weight and easy to install simply by pressing the bearing cups into the frame instead of threading them. There's no change to the crank - spindle length and diameter remain the same.GXP captures the left-side bearing between the spindle and the left crankarm and allows the drive-side bearing to float axially on the spindle. There's no need to side-load bearings during adjustment. No excess wear. And a much simpler installation. Just tighten to the proper specifications and you're ready to roll, worry-free. GXP's two bicycle-specific cartridge bearings and eight seals ensure a smooth, long-lasting ride. The new Gutter seal system takes a two stage approach in directing contaminates away from the bearings providing longer bearing life. GXP's new Gutter Seal design also reduces friction, 35% less drag than the current GXP BB, improving rider feel and performance. Gutter seal system has deeper installation tool grooves which provide stability