Integy Tuned Pipe Set is made of polished aluminum construction. Pipe features a nice scale looking exhaust port. INCLUDES: One tuned pipe One manifold One rubber pipe gasket Three manifold springs One 4x4mm set screw (requires a 2mm hex wrench) SPECS: Length: 4.75" (120mm) (pipe only) Outside Diameter: .66" (17mm) where pipe mounts into manifold