Enhanced performance. Superior value. Improved Rockhopper. By leveraging the fit and handling benefits of matching each rider with the optimal wheel size and suspension that operates at peak efficiency for everyone through our size-specific Rx Tune, we've incorporated additional performance into the Rockhopper without increasing the cost. The dependable and precise Shimano drivetrain features a sturdy 2x9 configuration that can tackle any challenges you present, while the confident braking provided by Shimano hydraulic disc brakes completes this exceptional package.