The Specialized Stumpjumper Pro Mountain Bike is the culmination of thousands of lab and testing hours, designed to make for a premium trail experience. Visually similar, all-new. Retaining the striking asymmetric visuals of the previous generation, this new frame has been rebuilt from the ground up to run rings around other bikes in its travel bracket. An ultralight frame provides an incredible balance of stiffness to weight, and redesigned suspension kinematics offer improved performance all over the hill.