Upright Derby-Style Headers for GM 2.8, 3.1, 3.4L V6 Engines w/Round Exhaust Ports [409 Stainless Steel]

Name: Upright Derby-Style Headers for GM 2.8, 3.1, 3.4L V6 Engines w/Round Exhaust Ports [409 Stainless Steel]
Brand: FLOWTECH
SKU: 387-11585FLT
Price: 223.95 USD
Availability: InStock

^$223⁹⁵$249.95You Save$26.00

3 left in stock

Ships on Nov 02, 2026

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GM V6

Upright Derby-Style Headers

GM 2.8, 3.1, 3.4L V6 Engines

Fits Round Style Exhaust Ports

1 1/2 in. Primary Tubes

20 in. Long, 27 in. Tall

2-1/2 in. x 10 in. Collectors

3/8 in. Flange

16-Gauge

409 Stainless Steel

Natural Finish

Flowtech 11585FLT Upright Derby-Style Headers

Collector Diameter: 2.50 in.
Collector Length: 10 in.
Engine: GM 90 Degree V6
Flange Thickness: 3/8 in.
Header Finish: Natural
Header Style: Upright
Inlet Port Shape: Round
Installed Height: 27 in.
Primary Tube Diameter: 1 1/2 in.
Primary Tube Length: 20 in.
Tube Material: 409 Stainless Steel

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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Headers that Offer Performance and Value

Flowtech designed this heavy-duty, 16-gauge 409 stainless steel header with the derby driver and mud bog competitor in mind. Featuring mandrel-bent tubing, Upright Derby Headers provide a consistent and smooth flow to increase exhaust velocity, and the welded-in collector merge spears help control back pressure allowing your engine to build more horsepower.

Part TypeHeader

Product LineFlowtech Upright Derby Headers

BrandFLOWTECH

Package Height10.0

Package Width14.0

Package Length31.0

Weight19.9 PG

Part CategoryPerformance Parts

Header MaterialStainless steel

Gaskets IncludedYes

Hardware IncludedNo

Mandrel-BentYes