| 摘要 |
PURPOSE:To enable making the vehicle width narrow in such a way that at least two exhaust pipes out of a rear air cylinder are gradually bent in the direction of being narrowed at their mutual space toward the center of the width of the body to be led to an exhaust collection chamber. CONSTITUTION:At least two exhaust pipes 2b, 2b out of a rear air cylinder are portioned out on both sides at the center l of the body width, and respectively led out rearward, and further they are gradually bent in the direction of being narrowed at their mutual space toward the center l of said width to be led to an exhaust collection chamber 3. Thus, the rear exhaust pipes 2b, 2b are bent in a weak-angled S-letter shape to the inside at its front view facilitating to make it escape from interference by the body frame (down-tube) 6 and a rear wheel driving gear, and enabling to narrow the vehicle width. |
