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Flowtech Upright Headers

Part # 11553FLT Be the first to write a review

Big Block Chevy 2-1/4" Upright Headers with 4" Collector- Black Finish

Flowtech Upright Headers

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Advertised Price $631.95
$439.95
Save $192.00
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4

Emissions

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

    See Emissions Details
Flowtech Headers are the perfect combination of quality and value. These Big Block Chevy Upright headers available in 2-1/4" tube diameters are ideal for even big cubic inch Big Block Chevy engines

Features:

  • CNC Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increases the cylinder scavenging effect and improves engine breathing
  • Heavy duty 16-gauge 409SS tubing for increased strength and durability
  • 2-1/4” tubing diameter for increased exhaust flow increasing performance and improved throttle response
  • Extended 4” collector for maximum strength and exhaust flow
  • Extra thick 7/16” header flange for a leak-free seal and maximum strength
  • Welded-in collector merge spears to control exhaust gas re-entry into primary tubes
  • Center of exhaust port to end of collector length is 33-1/2"

About Flowtech Exhaust

Flowtech provides high-quality performance exhaust systems at a great value. Explore our lineup of headers, mufflers, and exhaust systems at our official retailer, Holley.com!​

Air Injection TubesNo
ApplicationBig Block Chevy
Bolt Size3/8-16 x 3/4 IN
Bolts IncludedYes
Brand Flowtech Exhaust
California Proposition 65Yes
CARB (California) CompliantNo
Catalytic Converter Quantity0
CategoryExhaust
Collector AttachmentWeld-On
Collector Diameter4.00 IN
Collector Port Diameter4.00 IN
Collector Reducer IncludedNo
Collector Reducer Outlet DiameterN/A
ColorBlack
DesignUpright
Drive2WD
4WD
EGT PortNo
Emission Code4
EngineGM Big Block
FinishPainted
Flange Thickness0.4375 IN
7/16 IN
Gasket Or Seal IncludedYes
Grade TypePerformance
Header SeriesFlowtech
Header StyleUpright
Material409 Stainless Steel
Mounting Hardware IncludedYes
Oxygen Sensor PortNo
Part TypeExhaust Header
Port ShapeRound
Primary Tubing Diameter2 1/4 IN
2.25 IN
Product TypeHeaders
QuantitySold as a Pair
Sheen LevelSatin
Sub CategoryExhaust Manifolds
Tube Wall Thickness16 GU
UPC090127743614
Part Number11553FLT
4

This part is legal for sale or use on Racing Use Only Vehicles

The following vehicles are considered Racing Use Only Vehicles:

  • Racing Use Only Vehicles are vehicles that are used exclusively for competition that are not registered and that may never be used on the street.

WARNING: It is against the law to install this part on an Emissions Controlled Vehicle

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    *Free Shipping and Handling only offered to the contiguous US on orders over $149, excludes clearance parts and oversized packages.

    Some parts are not legal for use in California or other states with similar regulations.

    Flowtech Upright Headers
    Flowtech Upright Headers
    Advertised Price $631.95
    $439.95
    Save $192.00