Description Our exhaust manifold is made of high-quality 201 stainless steel, electroplated low-carbon steel flange, and mirror. The computerized bending technology ensures smoother exhaust flow, thus improving emission performance and reducing back pressure. Features Color:Black CNC machine flanges with TIG and MIG welded construction . Made from Stainless Steel. HP/Torque Gains of 5-10 Inlet/ Outlet: 1-1/2" OD / 2-1/4" OD 16 gauge wall piping TIG Welded CNC Machine 1x Exhaust Header with downpipe, gaskets and bolts For Toyota 90-95 Pickup/4-Runner 2.4L 22RE 4WD