Merits Pioneer 9 Heavy Duty Scooter3 wheeled outdoor scooter Heavy duty type, weight capacity up to 500 lbs. Automatic safety turning half speed control by sensor Capacity 500 lbs Top Speed 8 mph Driving Range 32 Miles Merits Pioneer 9 Heavy Duty Scooter Indoors or out, the heavy duty Pioneer 9 is tough enough to handle more than your average scooter. First, it has a staggering 550 pound weight capacity. Then there's the reinforced steel front bumper that protects against collisions