Patent ID: 8382125

Claim:
An all-terrain vehicle, comprising: a frame, comprising a front frame portion, a mid frame portion and a rear frame portion; a front suspension supported by the front frame portion; at least two front wheels coupled to the front suspension; a front torsion bar supported by the front frame and coupled to the front suspension; a front differential supported by the front frame portion and drivingly coupled to the front wheels; side by side seats, having a seat back and a seat bottom, the seat bottom having a top seating surface and a bottom mounting surface, the side by side seats further comprising a driver seating surface and a passenger seating surface; a rear suspension supported by the rear frame portion; at least two rear wheels coupled to the rear suspension; a rear torsion bar supported by the rear frame portion and coupled to the rear suspension; a rear differential supported by the rear frame portion and drivingly coupled to the rear wheels; an engine supported by the frame, the engine comprising at least one cylinder having a cylinder head, said at least one cylinder being positioned rearwardly of the seating area and the top of the cylinder head of said at least one cylinder being positioned higher than the seat bottom mounting surface, and with the at least one cylinder head positioned forwardly of the rear differential; a transmission coupled to the engine; a front drive shaft extending between the transmission and the front differential for coupling the transmission to the front wheels; a rear drive shaft extending between the transmission and the rear differential for coupling the transmission to the rear wheels; a fuel tank positioned below the one of the passenger seating surface and driver seating surface; and the overall vehicle width is less than 54 inches.