The SRAM X9 family is engineered to endure. From steep, endless climbs to hair-raising, technical descents, X9 is engineered to handle whatever comes your way. Smooth, precise shifting helps you cover more ground, faster. The lightweight, stiff and always reliable crankset lets you maintain your momentum through the rough stuff. Whether you’re sprinting for the finish or tackling an all-day epic, your best ride starts with X9.