Motorcycle noise silencer

The utility model discloses a motorcycle silencer, the outer parts of an exhaust pipe (1), a throttle pipe (5), and a throttle pipe (5') is covered with a silencer casing (4), and the inner part of which is provided with partitioning plates (9) to form expansion chambers (301), (302), and (303). The utility model is characterized in that the exhaust pipe (1) is connected with a resonance pipe (2), and the throttle pipe (5), the throttle pipe (5'), a resonance pipe (2'), and the resonance pipe (2) are respectively arranged on the partition plates (9) for fixing. The utility model can cause that compared with an expansion chamber type, the noise of a motorcycle engine can be reduced by 4-5 dB (A) and can ensure that the national requirement can be achieved, and the noise pollution can be reduced.