Number Plate. Polisport's replica plastics are produced with exclusive technologies to make the product durable and with the same level of quality as the original plastics of your dirt bike. Easy to install. Direct bolt-on. Polisport's Durable Gloss Polypropylene (DGP), the first plastic composition for off-road that incorporates maximum gloss and high resistance to breaking. Injection-molded, quality Number Plate with a perfect O.E.M. type fit and space for your race number. Inexpensive alternative to O.E.M. replacement parts.