The Spectre welded elbow intake tube allows you to design a custom air intake system by welding or booting the components together. This polished aluminum tube features a 90 degree welded elbow bend and adapts to 4 inch outside diameter tubes. This product is not C.A.R.B. exempt. Products that are not C.A.R.B. exempt are legal in most states, but may not be used in California or states with similar emissions control laws except on pre-1976 vehicles.