Exhaust Single Quiet Extractor Type 1Premium 1 3 8" Exhaust System is made from 16 Gauge mandrel bent 1 3 8" tubing for smooth flow All the thick flanges are surface ground and inner welds are finish ground to ensure a flat sealing surface and smooth exhaust flow This header has a centred collector with a small 3 Bolt flange in the 1 o'clock position Includes gaskets, bolts and nuts Comes painted with black temporary paint. We recommend removing this and painting with high temp exhaust