Vibrant Performance stainless steel universal performance mufflers are densely packed with our premium multi-layered sound absorption materials, and manufactured from 304 stainless steel for optimum durability and corrosion resistance. Vibrant Performance universal mufflers are manufactured without tips and offer the installer the flexibility needed for custom exhaust fabrication. They are available in a variety of inlet/outlet combinations and inlet / outlet I.D. dimensions ranging from 2.25 to 4.