Rear brake arm of motorcycle

The utility model relates to the technical field of motorcycles, and discloses a motorcycle rear brake arm which comprises a pedal mechanism, a fixing mechanism and a damping mechanism, the pedal mechanism comprises a pedal rod, a pedal block, a movable arm body and a cross rod, the pedal block is fixedly installed on the top of the pedal rod, and the movable arm body is fixedly installed on the pedal rod. A movable arm body located on the right side of the pedal block is fixedly installed at the top of the pedal rod, a transverse rod is fixedly installed on the outer surface of the movable arm body, the fixing mechanism comprises a top plate, a threaded rod and a nut, and the top plate is fixedly installed at the top of the movable arm body. According to the rear brake arm of the motorcycle, the threaded rod and the nut are fixed to the motorcycle, then the pedal block is stepped by a foot to start the rear brake arm when the rear brake arm is used, and the bottom of the telescopic rod is connected with the