Speed Racer Bike (16-Inch Wheels) Speed Racer-themed 16-inch BMX bike with heavy-duty steel frame Pneumatic 16-inch knobby tires with secure training wheels Rear coaster and hand brakes; fully enclosed chain guard Measures 40 x 36 x 24 inches (W x H x D); weighs 29 pounds Recommended for ages 4 to 8