High Performance. Unmatched Value.
At Flowtech Performance Exhaust, performance is more than just a promise—it’s a tradition. Since 1994, we’ve been building high-quality exhaust systems engineered to deliver real power gains at a price that makes sense. Founded by exhaust market expert Gary Biggs, Flowtech quickly earned a reputation as the go-to brand for enthusiasts who want performance without compromise.
Innovation That Speaks Loud and Clear
From the start, Flowtech made waves with bold product names like Raptor™, Terminator™, Afterburner™, and Warlock™—each built to meet the demands of serious drivers. We even brought back nostalgic icons like Purple Hornies™, because great sound and style never go out of fashion.
But we didn’t just make noise—we made improvements. Simple, effective innovations like slotted port flanges, dimpled tubes for easy header bolt access, and parallel-ground flanges for tight seals show our commitment to getting every detail right. Our Afterburner headers, with their velocity tube design, and the patented Warlock™ bypass muffler—winner of the 1996 SEMA Best New Product Award—demonstrate the Flowtech difference.
Powered by Holley Performance
In 1999, Flowtech became part of the Holley Performance Products family, allowing us to expand our lineup and bring our trusted performance to a broader range of vehicles. From classic muscle to modern trucks, including diesels, Flowtech continues to deliver power and precision where it counts.
Today, our product range includes headers, exhaust kits, X-pipe systems, and universal cut-out kits, all designed with the same core mission: bring unbeatable performance at an exceptional value.
Why Flowtech?
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✅ Proven performance with a legacy of innovation
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✅ Trusted by enthusiasts for over 30 years
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✅ Designed for easier installation and better fit
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✅ Backed by Holley’s industry-leading support
Our Mission
To lead the industry in value-priced performance exhaust systems, combining smart engineering, bold design, and relentless innovation.
Whether you’re chasing horsepower gains or just want your ride to sound as good as it looks, Flowtech is built to perform—and built to last.
Experience the Flowtech difference.