
Upright Derby Headers for Small Block Chevy
Flowtech 11546 (11546FLT) Features:
- CNC Mandrel-bent tubes ensure consistent tubing diameters for smooth exhaust flow, enhancing cylinder scavenging and improving engine breathing
- Constructed from heavy-duty 16-gauge 409 stainless steel (SS) for superior strength and long-lasting durability
- Designed with a 3 in.collector for maximum strength and optimized exhaust flow
- Features an extra-thick header flange for a leak-free seal and added strength
- Welded-in collector merge spears help control exhaust gas re-entry into the primary tubes, ensuring efficient exhaust flow
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.
CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART
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.

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