2-1 S.S. Merge Collector 1.75In Inlet Id 2In Out

The 2-1 S.S. Merge Collector 1.75In Inlet ID 2In Out from Vibrant Performance is engineered for builders seeking efficient exhaust scavenging and improved engine breathing. This dual-inlet merge design consolidates two primary pipes into a single outlet, making it essential for custom headers, performance builds, and street/strip applications where maximizing flow velocity matters. The 1.75-inch inlet ID accepts standard primary tube diameters while the 2-inch outlet ID positions the collector for optimal transition into your mid-pipe or cat-back system.

Constructed from 304 stainless steel, this merge collector resists corrosion and thermal cycling better than mild steel alternatives, extending service life in high-heat exhaust environments. The 2-1 configuration uses a stepped merge design that reduces turbulence at the junction where both primaries meet, preserving scavenging pulses and minimizing backpressure—critical for naturally aspirated and forced-induction engines alike. At just 1.6 lbs, the lightweight construction won't burden your suspension or handling geometry, while the compact 7.6 x 5.1 x 9.8-inch profile fits tight engine bays typical of track-prepped or modified street cars.

This collector suits V-twin, small-displacement V6, and four-cylinder builds where dual-primary headers feed into a common collector. Fabricators and performance shops rely on Vibrant Performance merge collectors for their precision welding, repeatable sizing, and proven flow characteristics. Installation requires welding or TIG work to integrate the 1.75-inch inlets into your custom header pipes; flanged options are available separately if you prefer bolt-on modularity. Whether you're tuning for peak horsepower or maximizing exhaust scavenging on a supercharged build, this stainless steel collector delivers the thermal stability and flow optimization that separates a complete exhaust system from a half-measure.