Muffler assembly and pseudo muffler assembly for a motorcycle, and motorcycle incorporating the same

1. A sport-type motorcycle, comprising a body frame; a rear wheel operatively attached to the body frame; a muffler assembly including a muffler and a muffler cover covering at least a laterally outer side portion of the muffler, said muffler assembly being arranged on one of a right side and a left side of the rear wheel in a lateral direction; and a housing box, arranged on the other of the right side and the left side of the rear wheel, said housing box being operatively attached to a rear portion of said body frame; wherein the housing box has a shape substantially similar to a shape of the muffler assembly thereby forming a pseudo muffler assembly, wherein said pseudo muffler assembly is oriented substantially parallel to the muffler assembly when viewed in plan; wherein said housing box comprises: a box body having an opening formed therein at an upper portion thereof, said opening being open from the upper and outer side portions of said box body, and a lid having a substantially L-shaped cross section, said lid being operable to close and open said opening of the box body, and being attached/detached in a vehicle-width direction for covering the box body; wherein a shape of said lid is substantially similar to a shape of the muffler cover; and wherein a color of said lid is substantially similar to a color of said muffler cover.

2. A motorcycle according to claim 1 , wherein the muffler cover has a substantially L-shaped cross section; and wherein the muffler cover covers an upper portion of the muffler and the laterally outer side portion thereof.

3. A motorcycle according to claim 2 , further comprising a seat attached at a rear portion of the body frame; and a pair of left and right rear side covers disposed below the seat; wherein left and right lateral portions of the body frame are spaced from each other and are covered with said left and right rear side covers below the seat; wherein the muffler assembly is arranged under one of said and right rear side covers; and wherein the housing box is arranged under the other of said left and right rear side covers.

4. A motorcycle according to claim 2 , further comprising an ABS modulator disposed in said housing box, wherein said ABS modulator is operable to execute antilock braking control during vehicle operation.

5. A motorcycle according to claim 1 , further comprising a seat attached at a rear portion of the body frame; and a pair of left and right rear side covers disposed below the seat; wherein left and right lateral portions of the body frame are spaced from each other and are covered with said left and right rear side covers below the seat; wherein the muffler assembly is arranged under one of said and right rear side covers; and wherein the housing box is arranged under the other of said left and right rear side covers.

6. A motorcycle according to claim 1 , further comprising an ABS modulator disposed in said housing box, wherein said ABS modulator is operable to execute antilock braking control during vehicle operation.

7. A motorcycle according to claim 1 , wherein said muffler cover is attached to the muffler.

8. A motorcycle according to claim 1 , wherein said muffler extends to a level above an upper portion of the rear wheel.

9. A sport-type motorcycle comprising a body frame; a muffler assembly arranged on one of a right side and a left side of a rear wheel; and a pseudo muffler assembly arranged on the other of said right side and said left side of the rear wheel; wherein a shape and size of said pseudo muffler is substantially similar to a shape and size of said muffler assembly; wherein said muffler assembly comprises a muffler; and a muffler cover for covering at least a portion of the muffler; wherein said pseudo muffler assembly comprises a housing box having an opening formed therein; said housing box configured to receive an operating element of the motorcycle therein; and a lid for covering the said opening of the housing box; wherein said muffler assembly and said pseudo muffler assembly are arranged substantially symmetrically and are parallel in plan view to each other on opposite sides of a longitudinal axis of the motorcycle; and wherein a weight of said muffler assembly is substantially similar to a weight of said pseudo muffler assembly having said operating element disposed in the housing box, thereby achieving a substantially balanced weight at a rear portion of the motorcycle.

10. A motorcycle according to claim 9 , wherein the muffler cover has a substantially L-shaped cross section; and wherein the muffler cover covers the muffler from upper and laterally outer side portions thereof.

11. A motorcycle according to claim 9 , wherein said muffler cover and said lid each have a substantially L-shaped cross section; and wherein a color of said lid is substantially similar to a color of said muffler cover.

12. A motorcycle according to claim 9 , wherein said operating element is an ABS modulator, which is operable to execute antilock braking control during operation of the motorcycle.

13. A motorcycle according to claim 9 , further comprising a tandem seat situated above said longitudinal axis, said tandem seat arranged between said muffler assembly and said pseudo muffler assembly.

14. An off-road motorcycle comprising a body frame; a rear wheel operatively attached to the body frame; a seat arranged at a rear portion of the body frame and situated above a longitudinal axis of the body frame; a muffler assembly arranged on one of a right side and a left side of the rear wheel; and a pseudo muffler assembly arranged on the other of said right side and said left side of the rear wheel; wherein a shape and size of said pseudo muffler is substantially similar to a shape and size of said muffler assembly; wherein said muffler assembly comprises a muffler; and a muffler cover covering at least a portion of the muffler; wherein said pseudo muffler assembly comprises a housing box having an opening formed therein; said housing box configured to receive an operating element of the motorcycle therein; and a lid for covering the said opening of the housing box; and wherein said muffler assembly and said pseudo muffler assembly are arranged substantially symmetrically and are parallel in plan view to each other on opposite sides of a longitudinal plane of the motorcycle; and wherein a weight of said muffler assembly is substantially similar to a weight of said pseudo muffler assembly having said operating element disposed in the housing box, thereby achieving a substantially balanced weight at a rear portion of the motorcycle.

15. A motorcycle according to claim 14 , wherein the muffler cover has a substantially L-shaped cross section; and wherein the muffler cover covers the muffler from upper and laterally outer side portions thereof.

16. A motorcycle according to claim 14 , wherein said muffler cover and said lid each have a substantially L-shaped cross section; and wherein a color of said lid is substantially similar to a color of said muffler cover.

17. A motorcycle according to claim 14 , wherein said operating element is an ABS modulator, which is operable to execute antilock braking control during operation of the motorcycle.