2-1 Merge Collector 1.875in Inlet ID 2.5in

The Vibrant Performance 2-1 Merge Collector 1.875in Inlet ID 2.5in (Part #10365) is a slip-on exhaust merge collector engineered to combine dual exhaust primaries into a single outlet. This stainless steel component is designed for custom exhaust builds where two 1.875-inch diameter primary tubes flow into a unified 2.5-inch collector outlet, optimizing scavenging efficiency and improving exhaust gas velocity across the full RPM range.

Constructed from stainless steel with a natural finish, this merge collector handles the thermal and flow demands of turbocharged, naturally aspirated, and supercharged engine builds. The 1.875-inch primary inlet diameter accommodates standard exhaust manifold tube sizing, while the 2.5-inch outlet provides the correct taper geometry for smooth flow transition and minimized turbulence. This specification ratio is critical in merge collector design—the transition from two primary tubes into a larger single outlet creates a velocity-balanced junction that reduces back pressure while maintaining scavenging benefits during cylinder overlap events.

This collector serves custom exhaust system builders, performance tuners, and enthusiasts fabricating bespoke exhaust systems for street rods, race vehicles, and modified production cars. The stainless material resists corrosion from condensation and thermal cycling, extending service life in both street-driven and competition applications. The slip-on design simplifies installation into custom collector housings or downstream piping configurations without requiring welded flanges on the primary tubes themselves.

Vibrant Performance is recognized for precision-engineered exhaust components and flow-optimized intake systems. This merge collector represents core competency in header and collector design where dimensional accuracy directly impacts exhaust scavenging dynamics and overall engine performance.