This is a Mini 4WD base machine in the style of Shigeiru. This is a handmade item. If you are looking for a factory-level product, I recommend other products. Some carbon parts are aftermarket. All parts other than the aftermarket carbon are genuine Tamiya products. Pera tires: 23mm Broken-in Mach Dash motor: 34000 rpm The rollers will be removed before shipping. Please comment if you have any other questions. Note: Changed from rigid to sliding damper.