Kymco makes all of Kawasaki's scooters, and, as was pointed out, most of their small ATVs. Kymco also makes a lot of their midsize engines, and 250cc based engines for Arctic Cat. Kymco also makes the engines for that 4 wheel thing from Switzerland, the Quaddro. TGB makes Morini motors for the Suzuki 50cc scooters and the 400cc Morini motor used in a lot of ATVS, including the Arctic Cat. The version made in China is the one used in the K429 Burgman until 2006. The Kymco 400 is basically the same motor as the Kymco 500 with a smaller diameter cylinder. You can usually tell by the size of the rollers who made the engine. Kymco is now providing most of the variators and clutches to Yamaha, in addition to Honda. Kymco also makes a lot of parts for PGO, and they both make the GY6 engine Kymco (not Honda) invented. PGO also makes a 250cc engine that is identical to the Kymco 250. The BMW 400 Scooter is built by a company called Voge, out of China and has nothing to do with Kymco.