The GR2 - 2X drivetrain builds onto the performance of the GR 1, combining the same precision engineering, however, with a 2X drivetrain that delivers greater comfort, control, and efficiency for your longer adventures on any type of terrain, from smooth to rough. The GR2 is most suitable for cyclists who split their rides between road, gravel, and long adventures, by offering uncompromised performance whatever your choice of surface and environment your ride takes you.