Patent ID: 7849947

Claim:
A motorcycle frame structure, comprising: a head pipe pivotally supporting a front fork and a steering handlebar operatively attached to the front fork; a pair of left and right main frame sections extending rearwardly and downwardly from the head pipe; a pair of left and right pivot plates provided at respective rear portions of the main frame sections and configured to reciprocally swingably support a front portion of a swing arm therebetween, said swing arm rotatably supporting a rear wheel at a rear portion thereof; and an engine hanger provided integrally with each of the respective left and right main frame sections and configured to extend downwardly from corresponding intermediate portions of the left and right main frame sections; wherein a front edge of each engine hanger is inclined forwardly upwardly toward the head pipe, the left and right main frame sections are each formed with a through-hole therein above the engine hanger; and a reinforcing portion is provided in each of the main frames, extending generally parallel to the front edge of an associated engine hanger, so as to longitudinally traverse the through-hole.