Stainless Headers Mfg, Inc. - Billet CNC Header Flanges

Header Flanges - Billet CNC Header Flanges

We are now offering custom CNC Header and Exhaust Flanges! Precision milled from billet stainless steel, aluminum, or titanium, we can create nearly any custom flange to fit your build's needs.

Whether you are looking for custom port alignment, new contours and flanges peripherals, contoured and molded exhaust ports, or even ultra-lightweight options, we can supply it.

Every flange will be precision skimmed to ensure flatness and straightness. All bolt holes and flange port holes will be precisely chamfered for a smooth, bur free edge.

These custom CNC flanges will be offered in 3/8" and 1/2" thickness, great for conventional headers, supercharged engines, nitrous builds, turbo headers, or zoomie header applications.

Browse Billet CNC Header Flanges Products

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Items 1-11 of 11
NEW!
CNC, LS
Description: Available with 1 3/4", 1 7/8", 2", 2 1/8" or 2 1/4" ROUND ports. SOLD AS A PAIR
Item #: SHM-2525-CNC-304
Condition: New
Unique Item
These Billet CNC Chevy LS Header Flanges are currently made-to-order. Lead times are shorter than our custom CNC profiles, but are still estimates only.
Price: $349.95

NEW!
CNC, Big Block Chevy
Description: Available in 1 7/8", 2", 2 1/8", 2 1/4", or 2 1/2" Round Port Options. SOLD AS A PAIR
Item #: SHM-1490-CNC-304
Condition: New
Unique Item
These Big Block Chevy Billet CNC Header Flanges are currently made-to-order. Lead times are shorter than our custom CNC profiles, but are still estimates only.
Price: $379.95

NEW!
CNC, Big Block Chevy
Description: Available in 1 7/8", 2", 2 1/8", 2 1/4", or 2 1/2" Round Port Options. SOLD AS A SET OF 8
Item #: SHM-1490s-CNC-304
Condition: New
Unique Item
These Big Block Chevy Single Port Billet CNC Header Flanges are currently made-to-order. Lead times are shorter than our custom CNC profiles, but are still estimates only.
Price: $469.95

NEW!
CNC, Big Block Chevy
Description: Available in 1 7/8" or 2" D-Port Options. SOLD AS A PAIR
Item #: SHM-2522-CNC-304
Condition: New
Unique Item
These Big Block Chevy D-Port CNC Header Flanges are currently made-to-order. Lead times are shorter than our custom CNC profiles, but are still estimates only.
Price: $399.95

NEW!
CNC, Big Block Chevy
Description: Available in 1 7/8" or 2" Square Port Options. SOLD AS A PAIR
Item #: SHM-2520-CNC-304
Condition: New
Unique Item
These Big Block Chevy Square Port CNC Header Flanges are currently made-to-order. Lead times are shorter than our custom CNC profiles, but are still estimates only.
Price: $399.95

NEW!
CNC, BAE
Description: CNC Machined for the Brad Anderson Enterprise 5x Rect Port Hemi Heads. SOLD AS A PAIR
Item #: SHM-6238a-CNC-304
Condition: New
Unique Item
These Billet CNC Stainless Header Flanges for BAE 5x Hemi Heads are currently made-to-order. Lead times are shorter than our custom CNC profiles, but are still estimates only.
Price: $449.95

NEW!
CNC, BAE
Description: Available in 2 1/4", 2 3/8", or 2 1/2" Port Size. SOLD AS A PAIR
Item #: SHM-6238-CNC-304
Condition: New
Unique Item
These CNC Machined Flanges for BAE 6x/8x Hemi Heads are currently made-to-order. Lead times are shorter than our custom CNC profiles, but are still estimates only.
Price: $449.95

NEW!
CNC, LS, CID
Description: Available with 2", 2 1/8" or 2 1/4" ROUND ports. SOLD AS A PAIR
Item #: SHM-2525-CID-CNC-304
Condition: New
Unique Item
These CID LS Raised Port CNC Header Flanges are currently made-to-order. Lead times are shorter than our custom CNC profiles, but are still estimates only.
Price: $449.95

NEW!
CNC, Noonan
Description: Available in 2 1/4", 2 3/8", and 2 1/2" Port Sizes. SOLD AS A PAIR
Item #: SHM-6221-CNC-304
Condition: New
Unique Item
These CNC Machined Flanges for Noonan 4.8" Mach 1 Hemi Heads are currently made-to-order. Lead times are shorter than our custom CNC profiles, but are still estimates only.
Price: $449.95

NEW!
CNC, LSx
Description: Available with 1 3/4", 1 7/8", or 2" sized D-Ports. SOLD AS A PAIR
Item #: SHM-2530-CNC-304
Condition: New
Unique Item
These Chevy LS Gen III/IV CNC Header Flanges are currently made-to-order. Lead times are shorter than our custom CNC profiles, but are still estimates only.
Price: $399.95

CNC
Description: Custom Billet CNC Header Flanges-- SOLD AS A PAIR
Item #: SHM-CNC-Flange
Condition: New
Unique Item
These custom Billet CNC Header and Exhaust Flanges are currently made-to-order. Lead times are estimates only. Please contact our sales team directly to discuss your needs
Price: $499.95

Items 1-11 of 11

More About Billet CNC Header Flanges

We are now offering custom CNC Header and Exhaust Flanges! Precision milled from billet stainless steel, aluminum, or titanium, we can create nearly any custom flange to fit your build's needs. Whether you are looking for custom port alignment, new contours and flanges peripherals, contoured and molded exhaust ports, or even ultra-lightweight options, we can supply it. Every flange will be precision skimmed to ensure flatness and straightness. All bolt holes and flange port holes will be precisely chamfered for a smooth, bur free edge. These custom CNC flanges will be offered in 3/8" and 1/2" thickness, great for conventional headers, supercharged engines, nitrous builds, turbo headers, or zoomie header applications.