The Vibrant Performance 4-1 Merge Collector is designed for naturally aspirated engine setups, featuring a single slip design that ensures smooth exhaust flow. Constructed from durable T304 stainless steel, this collector is precisely mandrel bent and TIG welded to provide high-quality craftsmanship and reliable performance. Its expanded inlets are engineered to fit seamlessly with Vibrant Stainless Steel piping, offering a perfect connection for optimized exhaust systems. This merge collector is available with inlet sizes ranging from 1.75 inches to 2.25 inches, and outlet sizes from 2.5 inches to 4 inches, allowing for versatile installation tailored to your specific application.