Patent ID: 7017698

Claim:
A motorcycle comprising: a frame; an engine coupled to the frame and including a gearbox; a left drive sprocket coupled to the gearbox at a left side of the motorcycle; a right drive sprocket coupled to the gearbox at a right side of the motorcycle; a laterally flexible swingarm coupled to one of the frame and the engine; a rear wheel coupled to the swingarm; a left driven sprocket coupled to the rear wheel at the left side of the motorcycle; a right driven sprocket coupled to the rear wheel at the right side of the motorcycle; a left chain coupling the left drive sprocket to the left driven sprocket; and a right chain coupling the right drive sprocket to the right driven sprocket; whereby chain-induced twist of the swingarm is reduced; and wherein the left chain passes through a hole extending through a left side of the swingarm; and the right chain passes through a hole extending through a right side of the swingarm.