CXRacing 3" O.D. 304 Stainless Steel Pipe/Tube Kit, 16 Gauge, 8 Pcs + 2.5" X4" Flex Pipe 45 Degree Bend X2 90 Degree Bend X2 U Bend X2 Straight X2 Flex Pipe X1 Great For Many Custom Applications, Exhaust, Downpipe, Manifold, Header