Improved performance. Greater value. Enhanced Rockhopper. By leveraging the fit and handling benefits of matching each rider with their optimal wheel size and suspension, which is designed to maximize performance for all through our size-specific Rx Tune, we've integrated superior performance into the Rockhopper without increasing the cost. The dependable and precise Shimano drivetrain offers a sturdy 2x9 setup that can tackle any challenge you present, while the assured braking from Shimano hydraulic disc brakes completes the exceptional package.