Flowtech Expands Derby Header Lineup!

11/19/2019
10 min read

Flowtech Expands Derby Header Lineup!

11/19/2019
10 min read

Flowtech upright headers feature CNC mandrel-bent primary tubes that provide consistent tubing diameters for smooth flow of the exhaust pulse and increase the cylinder scavenging of the exhaust to improve engine breathing. The primary tubes are constructed from heavy duty 16-gauge 409SS tubing for increased strength and durability. Collector diameters range from 2.5"-4" and include a welded-in collector merge spear to help control exhaust gas re-entry into the primary tubes. They also feature extra thick flanges for a leak-free seal and maximum strength.


Now available for 2.3L I4 Ford, Small Block Chevy and Big Block Chevy in a variety of finishes. Flowtech's upright headers will be sure to look as great as they perform while out bashing sheetmetal with your friends!

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