GRIZZLY 450 AUTOMATIC 4X4 HAS ALL THE SAME GREAT FEATURES AS BIG BROTHERS GRIZZLY 660/700, INCLUDING FOUR-WHEEL INDEPENDENT SUSPENSION, AND IT'S POWERED BY A FUEL-EFFICIENT LIQUID-COOLED ENGINE. INDUSTRY-EXCLUSIVE, FULLY AUTOMATIC ULTRAMATIC(R) TRANSMISSION IS THE MOST ADVANCED DRIVE SYSTEM IN ATVING. AN AUTOMATIC CENTRIFUGAL CLUTCH MAINTAINS CONSTANT BELT TENSION FOR REDUCED BELT WEAR AND CLASS-EXCLUSIVE ALL-WHEEL DOWNHILL ENGINE BRAKING. INDUSTRY-EXCLUSIVE THREE-POSITION ON-COMMAND(R) IN/OUT 4WD FEATURE LETS YOU SWITCH BETWEEN 2WD, LIMITED-SLIP 4WD AND CLASS-EXCLUSIVE FULLY LOCKED DIFFERENTIAL 4WD-ALL WITH THE SIMPLE PUSH OF A BUTTON. OVERRIDE BUTTON ALLOWS ENGINE TO MAKE MAXIMUM RPM IN FULL DIFF-LOCK MODE.