Do-it-Yourself Pipe Kit (1-3/4")
This Biltwell Inc. Builder Exhaust Kit is exactly what its name implies: a selection of pre-fabbed tubing, header flanges and exhaust tips that puts the art of custom exhaust building in the hands of backyard fabricators. The tubing is raw, ready to weld 16 guage mild steel.

Two 16-inch-long (350mm) straight sections
Two 3.5-inch radius (90mm) U-bends with straights
Two 5-inch radius (134mm) U-bends with straights
Two Evolution flanges
Two Shovelhead flanges
Two Ironhead flanges
Two STD flanges
Two fishtail tips