The sequential gearbox has many advantages. Unfortunately, the gear changing operation still lasts rather long. A twin-clutch gearbox in which two gear shafts, one running inside the other, and each combined with a clutch, offers a solution without a great deal of effort. The aim is to use the components of a dry clutch. In spite of the somewhat increased space needed, it can be also installed in a transverse mounted, front-wheel drive. The gear changing can be either manual or automatic.