The REDS X-ONE Torque 2143 One-Piece Off-Road Tuned Pipe for S Series engines combines the REDS 2143 Pipe and the REDS M Manifold to create this one-piece "Torque" exhaust. The X-ONE system is an innovative all-in-one pipe-manifold system. The pipe has been welded to the manifold to improve performance and fuel consumption. With X-ONE configuration there is no need for springs or gaskets, and the one piece design creates increased reliability and improved tuning stability.