Frame Interface - For mountain and road bikes with English threading. Shell Width - Fits 68 or 73-millimeter bracket shells. Comes with spacers for 73mm. Cranksets - Bottom brackets are interchangeable between SRAM cranksets but can only be installed with SRAM cranks. Gutter Seal Technology - Drastically improves sealing against the elements while reducing seal drag and friction. GXP Technology - Gutter seal design cuts friction, durability and weight - improving both feel and performance.
