Jet Tech has made over 500 custom exhaust tubes since 1999. This YA F-18 Twin Bifurcated Exhaust Tube is the second edition to the list of bifurcated exhaust tubes for some of the more popular jet kits. This pipe is designed for 120-200 size turbines up to 55# thrust and has a 4.0” inside diameter machined bell mouth (5.0" OD) and double 2.75” ID exits (3.5" OD). The inner pipe is constructed of .007 & .008" 302 full hard stainless steel, the outer pipe is .005 302 full hard stainless. Call or email Jet Tech for availability before ordering this pipe. Additional shipping charges will be applied.