Hedman Collector Reducer 3" Inlet to 2.5" OD Outlet Pair — 3-Bolt Flange, Stamped Steel

Hedman Hedders Collector Reducer pairs convert a 3-inch header outlet to a 2.5-inch OD pipe using three-bolt flanges and included gaskets — steel construction in natural finish.

This pair of collector reducers is designed to bridge common header and exhaust mismatches without permanent modification. Each unit reduces a 3.00-inch inlet to a 2.50-inch outside-diameter outlet, ships with three-bolt flanges and gaskets for a sealed connection, and is made from stamped steel in an unfinished, natural surface ready for welding or coating. The set is vehicle-specific in fit and built in the United States, intended for enthusiasts and technicians who need a durable, straightforward adapter between header collectors and smaller exhaust tubing.

How does this reducer fit my existing header and exhaust?

These reducers slip over a 3.00-inch collector outlet on the header and provide a 2.50-inch OD spigot for downstream exhaust tubing. The three-bolt flange ensures bolt-on compatibility with many aftermarket downpipes and adapters, and the included gaskets help create a leak-resistant seal during installation.

• 3.00 in inlet accepts standard 3-inch header collectors
• 2.50 in OD outlet matches common exhaust tubing sizes
• 3-bolt flange aligns with typical exhaust flange patterns
• Includes gaskets for improved sealing and reduced leaks

What materials and build quality can I expect?

Hedman manufactures these reducers from stamped steel with a natural, uncoated finish, offering robust structural strength for exhaust environments. They are not chrome-plated or ceramic-coated, so they are ideal when the part will be welded, painted, or used where finish is not critical.

• Stamped steel construction for durability
• Natural finish suitable for welding or custom coating
• Made in the United States with vehicle-specific fit considerations
• Ships as a pair to service both sides of dual-exhaust setups

How easy is installation and what comes in the package?

Installation is straightforward for anyone familiar with aftermarket exhaust work: align the flange, secure with bolts, and use the supplied gaskets to prevent leaks. Because these are vehicle-specific components, final fitment may require minor trimming or welding depending on your vehicle’s header geometry and exhaust layout.

• Pair of collector reducers (left and right or two units for dual systems)
• Each unit includes a three-bolt flange and gasket for sealing
• Package dimensions approximately 14.2 x 17.5 x 10.4 cm and 2.3 lb weight
• May require basic exhaust tools: wrenches, clamps, or welding equipment

Who is this for? If you are a mechanic, fabricator, or performance enthusiast dealing with mismatched header and exhaust diameters, these Hedman Hedders collector reducers offer a durable, bolt-on solution. They work well for custom exhaust builds, retrofits where a smaller downstream pipe is preferred, or when replacing worn adapters without changing the header. Choose these if you need a reliable steel reducer pair that arrives with flanges and gaskets and is ready for installation or finishing.