SKU: SCH4522
MPN: 4522
The SCHOENFELD Header SB Mopar 1-5/8in Demo Derby (MPN 4522) is a hood-exit header set built for Small Block Mopar engines running in demolition derby and off-road competition. These demo derby headers route exhaust up and out through the hood, keeping the tubes clear of the carnage that happens under and around the car during a heat. Anyone building a derby Mopar knows stock manifolds and street piping don't survive long in the pit, and this set is made to take abuse. It ships in kit form with gaskets and hardware, so it's ready to bolt to the heads out of the box.
Each tube measures 1.625 in (1-5/8 in) in primary diameter, sized to keep exhaust velocity up on a small block that's getting worked hard. Construction is steel with a black paint finish that serves as temporary protection rather than a long-term coating, which is normal for race-only hardware that lives a short, violent life. Product weight runs about 13.7 kg, with packed dimensions of roughly 509 x 255 x 864 mm per the manufacturer. The kit includes the gaskets and bolts needed to mount the headers to Small Block Mopar heads. Because the tubes exit through the hood, there's no downpipe or collector routing to worry about, which simplifies the build and removes the most vulnerable parts of a conventional exhaust path.
Use these when you're prepping a Mopar for the arena and want exhaust that won't get crushed on the first hit. They're built for racing and off-road use only and are not legal for street use on 1975-and-later vehicles, so plan to run them on a dedicated competition car. If you're outfitting a different engine family, we carry header sets across the lineup, and you can browse our full headers selection or the broader exhaust parts catalog. Builders working other Mopar platforms can also check our Mopar headers for fitment options.
They are designed for Small Block Mopar engines. Some buyers have asked about larger displacement Mopar applications, so confirm your specific engine and head configuration before ordering. The kit includes gaskets and hardware sized for Small Block Mopar heads.
These are hood-exit headers, meaning the tubes route up and out through the hood instead of running under the car. That design keeps the most vulnerable exhaust components away from contact damage during a derby heat.
No. These headers are built for demolition derby racing and off-road use only. They are not legal for street use on 1975-and-later model year vehicles. Run them on a dedicated competition vehicle.
Yes. The set ships in kit form and includes the gaskets and hardware needed to mount the headers to Small Block Mopar heads, so you can bolt them on without sourcing additional fasteners.
The primary tubes measure 1.625 in, or 1-5/8 in. That diameter keeps exhaust velocity up on a small block under hard competition load.
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