Flowmaster Manuals & User Guides

フローマスター, a Holley Performance Brand, is a premier manufacturer of performance exhaust systems, mufflers, headers, and air intake kits for automotive enthusiasts. Since its inception, Flowmaster has been dedicated to delivering innovative exhaust technology that improves horsepower, torque, and fuel economy. The brand is best known for its "chambered" muffler design, which produces a signature exhaust note sought after by muscle car, truck, and off-road vehicle owners.

The company offers a wide range of products including complete Cat-back and Axle-back exhaust systems, Delta Force performance air intakes, and catalytic converters. Flowmaster caters to a diverse market, supporting everything from classic street rods and modern muscle cars to daily drivers and competitive racing vehicles.

• How do I contact Flowmaster Technical Support?

  You can reach Flowmaster Technical Support by calling (866) 464-6553 during business hours.

• What kind of warranty does Flowmaster offer?

  Flowmaster offers a Lifetime Limited Warranty on stainless steel mufflers and exhaust systems, and a Three Year Limited Warranty on aluminized steel products. Specific details vary by product series.

• Do Flowmaster exhaust kits require welding?

  Many Flowmaster Cat-back and Axle-back systems are designed for bolt-on installation using factory mounting points. However, some universal mufflers or custom setups may require welding for a secure fit. Instructions are included with each kit.

• Does Flowmaster make products other than exhausts?

  Yes, Flowmaster also manufactures Delta Force performance air intake systems, catalytic converters, and various exhaust accessories.