Using your Parolin Cadet Mini Racing Opportunity Kart Chassis is straightforward. First, make sure all the parts are properly assembled and tightened. When you're ready to hit the track, adjust the rear axle according to your preference - the soft compound gives more flexibility, the medium is a good all - around option, and the hard one offers more stability. The self - adjusting hydraulic brake system will automatically adapt to your driving, but you can always fine - tune it if needed. As for maintenance, regularly check the bearings on the rear axle for any signs of wear. Keep the magnesium wheels clean and check for any cracks after each race. The powder - coated red finish is durable, but avoid scratching it. When it comes to shipping, remember it has to go by truck or you can pick it up at Comet. And be aware that the freight cost might be different from the estimate depending on where it's going.