An ABS modulator support structure of a saddle type vehicle includes a main frame, a down frame, a pair of shroud which cover the right and left side of the frames, a radiator, a reserve tank which stores a coolant for the radiator, and an ABS module. The radiator is arranged on one (left side) side of the down frame 18 in a width direction of the vehicle. The ABS module is arranged on the other (right side) of the sides of the down frame in the width direction of the vehicle. The reserve tank and the shrouds are arranged outside the ABS module.