FamilyGoKarts Boulder 400XR Kids ATV in Black Spider This ATV has a dependable air-cooled, single cylinder, 4-stroke engine for ease of maintenance, convenient electric start and a smooth, easy to handle automatic transmission. A rugged steel frame and full suspension combined with all-terrain tires make this bike ready for the toughest trails. Max Torque: 6.5N.m/5000-5500r/min; Battery: 12V/4Ah; Front Hand Brake: Drum; Rear Foot Brake: Hydraulic Disc; Fuel Capacity: 2.3 Liters It is equipped with several safety features to keep parents in control including a speed limiter and remote control with engine shut-off. Its low 25 inch seat height and stable 31.5 inch wheelbase make the Boulder 400XR the perfect size for kids just starting to ride.