Vehicle has four-wheel drive

THE INVENTION CONCERNS A FOUR-WHEEL DRIVE VEHICLES. IT RELATES TO A VEHICLE FOUR WHEEL DRIVE IN WHICH THE WHEEL BEFORE 1 MAY BE DRIVEN WITH PERIPHERAL SPEED HIGHER THAN THE REAR WHEELS 2 THROUGH TRANSMISSION FRONT WHEEL 5. INVENTION, THE TRANSMISSION OF SELECTIVE ALLOWS THAT FRONT WHEEL INCREASING SPEED OR NOT, IS PLACED DIRECTLY IN THE HOUSING FRONT AXLE IF ALTHOUGH MASS BALANCE FOR INCREASING THE WEIGHT COVERS THE FRONT WHEEL IS NOT NECESSARY. APPLICATION TO AGRICULTURAL TRACTORS.