Sram rival 22 11 speed chainset bb30 bb sram has risen to the highest levels of professional cycling by giving riders componentry that inspires confidence and performs flawlessly with many of the worlds top teams making the leap to sram there is little doubt that wins at the classics grand tours ironman and cross worlds were due in part to the lightest most efficient and ergonomic road componentry ever made x glider chainrings the chainrings are designed for an optimized shifting