Patent ID: 8047324

Claim:
An all terrain vehicle comprising: a vehicle body comprising: a midship section; a pair of left and right main frames to the rear of said midship section; and a rear section extending rearward of said pair of left and right main frames; left and right front wheels and rear wheels, a power unit including an engine and a transmission integrated therewith, mounted in the midship section of the vehicle body between said front and rear wheels, an air cleaner box supplying a clean air to said engine of said power unit, said air cleaner box having a back portion facing rearward, is disposed behind said power unit in line in the longitudinal direction, a fuel tank disposed above said power unit, a rider's seat provided on the rear section of the vehicle body behind said fuel tank, a rear swing arm mounted on the vehicle body swingable in a vertical direction, rotatably supporting a rear axle shaft at the rear end thereof, a power transmission transmitting driving force of said power unit to said rear axle shaft is disposed at one side of an end of said rear swing arm in a vehicle width direction, a rear braking device disposed at another side of an end of said rear swing arm in the vehicle width direction, and an exhaust silencer is disposed in a space between said power transmission and said rear braking device in a plan view, under said rider's seat, and wherein the rear section comprises a rear grip extending rearward of the rear section, wherein said exhaust silencer is supported, at a front portion and a rear portion thereof, by a pair of rear frames upwardly extended from said pair of left and right main frames towards the rear so as to hold thereon said rider's seat, wherein said exhaust silencer is inclined downward to the front along said rear frames, from a rear end of said rider's seat towards a swing pivot of said rear swing arm, wherein an exhaust end of said exhaust silencer is forward of said rear grip wherein said exhaust silencer further comprises a front end opposite the exhaust end, wherein the front end of the exhaust silencer is opposite a lower section of the back portion of the air cleaner box, and wherein said air cleaner box further comprises a forward recess formed in the lower section.