Equation motorcycle race front suspension goes up the xarm and all hinges on the front column with the distal end of xarm down, the near -end of going up xarm and xarm down all with the frame rigid coupling, the distal end of pull rod is articulated with the distal end of last xarm, the near -end downward sloping of pull rod is extended and is connected the rocking arm, the one end of bumper shock absorber is articulated with the rocking arm, the other end and connected to the frame go up xarm and lower xarm all including the two spinal branch arms that are the V -arrangement, going up the xarm and passing through the lug and is connected with the front column slope, two lugs are parallel to each other and downward sloping and 10 contained angles of horizontal direction formation to the xarm is 80 with the contained angle of front column on the messenger, goes up the rotatable cover of distal end of xarm and establishes on the first bearing between two lugs, down xarm downward sloping 1 degree is 89 with the contained angle of front column, two are shaken a reciprocal anchorage, are equipped with three pin joint on the rocking arm, and the pull rod is articulated with the first pin joint of rocking arm, and the bumper shock absorber is connected with the second pin joint of rocking arm, and the automobile body is articulated with the third pin joint of rocking arm.