Collector 3in To 2.25in 3 Bolt

The HEDMAN Collector 3in To 2.25in 3 Bolt reducer is a steel exhaust collector transitioning component engineered for exhaust system plumbing where primary tubes converge into a smaller diameter collector pipe. This 3-bolt flange design provides a secure, repeatable connection point critical in high-temperature applications, eliminating leaks that compromise both performance and durability in street, strip, and competition engines.

The reducer accepts a 3-inch inlet diameter and outputs 2.25 inches, making it ideal for stepped collector configurations common in small-block and mid-displacement engine builds. The 3-bolt flange connection distributes clamping load evenly, reducing stress concentration and vibration-induced failures. A gasket is included, ensuring a sealed joint without additional sealing compound dependency. Natural steel finish withstands moderate temperatures; buyers running aggressive headers or turbo applications should consider ceramic coating for extended service life in high-heat zones. Weighing 2.55 lbs, the compact footprint (4.5 × 4.2 × 6.9 inches) fits tight engine compartments without compromising clearance to chassis or ancillaries.

This collector is suited for enthusiasts building or upgrading carbureted, fuel-injected, naturally aspirated, and forced-induction exhaust systems. Whether transitioning from individual primary tubes to a single collector before a muffler or turbo inlet, proper sizing prevents backpressure spikes and flow restriction. Racers routinely verify collector diameter against primary tube count and engine displacement to optimize scavenging. The HEDMAN 21100 is a proven OEM-quality solution for repeatability and leak-free assembly across street and competition applications.