Xtreme Performance Exhaust 4 inch round straight through mufflers are built for drivers who want maximum exhaust flow and a deep, aggressive performance tone. Featuring a 14 inch body length and a true straight through internal design, these mufflers reduce backpressure and help improve throttle response while delivering a powerful, smooth exhaust sound. Available in 2.25 inch, 2.5 inch, and 3 inch inlet and outlet sizes, these mufflers are ideal for muscle cars, trucks, hot rods, and custom performance builds. The straight through perforated core allows exhaust gases to flow freely while producing a deep, bold tone without excessive restriction. Constructed from high grade stainless steel, these mufflers offer excellent durability, corrosion resistance, and long service life even in high heat environments. Designed for universal weld on installation, they are perfect for custom exhaust fabrication and performance upgrades. Whether you are building a street machine or upgrading your current exhaust system, Xtreme Performance Exhaust straight through mufflers deliver strong flow, aggressive sound, and reliable stainless steel construction.