Patent ID: 6962225

Claim:
A motorcycle, comprising: a frame having a front end and a rear end, the frame extending longitudinally from the front end to the rear end; a front wheel secured to the front end of the frame, the front wheel being rotatable about a first axis; a rear wheel secured to the rear end of the frame, the rear wheel being rotatable about a second axis, the first and second axes defining a first plane, the first plane being perpendicular to a second plane; an engine supported by the frame, the engine being located substantially between the front and rear ends of the frame, the engine including at least one air intake port and at least one exhaust port; a plenum being supported relative to the frame, the plenum being operative to receive ambient air for consumption by the engine; a first pipe for transmitting air from the plenum to the air intake port of the engine, the first pipe having a first longitudinal section; and a second pipe for receiving exhaust from the exhaust port of the engine, the second pipe having a second longitudinal section, the first and second longitudinal sections having substantially identical cross sectional configurations, the first and second longitudinal sections being located on opposite sides of the second plane such that the first and second longitudinal sections are, at corresponding longitudinal locations, substantially equally spaced from the second plane, the first and second longitudinal sections being located such that the first and second longitudinal sections are, at corresponding longitudinal locations, substantially equally spaced with respect to the first plane.