Malossi MHR Over Range Torque Driver (rear pulley) for Yamaha 50cc 2T models.

Only for use with the Malossi MHR Over Range Variator and Belt.

The Over Range hinges on the new Fixed Pulley of the torque driver that has a larger diameter. The larger diameter of this pulley allows one to have a greater velocity-ratio range compared to the original pulley that has a notably smaller external diameter. This translates to more efficient transition of the gearing, and more overall gearing ratio available, for faster acceleration and more top speed.