Scalvini Two-Stroke Factory Works Pipes are hand-assembled cone-by-cone to make an exhaust that looks as good as it performs. Each cone is hand cut, pounded and welded to Scalvini's stringent manufacturing guidelines. This is your opportunity to have a real works pipe and performance without the expense associated with parts of this caliber. There are less expensive ways to make a pipe but no other offers the "cool factor" that a Scalvini Factory Works Pipe offers! Using only the finest materials available, Scalvini produces exhaust systems for most modern two-strokes. Scalvini uses only the finest materials available. Scalvini ID tag attached to every pipe. CNC-machined exhaust flange. Double-wall mounting brackets offer increased durability.