Abstract: An exhaust pipe for connecting an exhaust gas outlet of each of a plurality of in-line cylinders of a turbo-supercharged internal combustion engine to a turbine of an exhaust gas turbo-supercharger. The exhaust pipe comprises four separate pipe strings having parallel axes located at the corners of a substantially equal-sided quadrilateral, a branch pipe for connecting the exhaust-gas outlet of each cylinder to the pipe strings, each branch pipe leading to one of the two corners of one side of the quadrilateral, and a connecting part provided in the pipe strings, said connecting part being arranged to twist the pipe strings whereby the parallel portions of an upstream part of the pipe strings and associated with that side of the quadrilateral remote from said one side communicate with the parallel portions of a downstream part of the pipe strings and associated with said one side of the quadrilateral.