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Flowtech Afterburner Muffler



Model #50363FLT

Shopper Award

If you really want great sound and maximum horsepower, kick on the Afterburner -- and kick a little butt. Flowtech Afterburner mufflers areyour very best bet for optimum performance and awesome sound. All Afterburners are made with an aluminized case for miles and miles of rustand corrosion protection. Their fully-welded construction offers stronger seams to prevent blow out under extreme conditions. Huge flow tubes provide blistering horsepower, while the sound tuned chambers provide unbelievable sound and minimize annoying resonance. And, Afterburner mufflers are fully reversible, designed for maximum flow in either direction!


  • Made From Aluminized Case
  • Rust And Corrosion Protection
  • Stronger Seams Prevent Blow Out
  • Provides More Horsepower
  • Max Flow In Either Direction
  • Powerful Sound With No Resonance
  • Automotive Item Grade: High Performance
  • Body Height (in): 4
  • Body Length (in): 13
  • Body Width (in): 10
  • Brand: Flowtech
  • Color: Silver
  • Emission Code: 5
  • Finish: Paint
  • Fitment: 82-92 Firebird/Camaro
  • Inlet Connection Type: Pipe Connection
  • Inlet Diameter (in): 3
  • Inlet Position: Offset
  • Material: Aluminized Steel
  • Mounting Type: Uses Factory Hangers
  • Muffler Series: Afterburner
  • Muffler Type: Chambered
  • Outlet Connection Type: Pipe Connection
  • Outlet Diameter (in): 2.5
  • Outlet Position: Dual
  • Overall Length (in): 16
  • Product Type: Street Mufflers
  • Reversible: No
  • Shape: Oval
  • Sound Level: Aggressive Sound
  • Type of Muffler: Chambered
  • Vehicle Type: Classic Muscle Car
  • Vehicle Type: Late Model Muscle Car
  • Vehicle Type: Street Rod
  • Vehicle Type: Street/Strip
  • Vehicle Type: Truck/SUV
  • Warning: California Proposition 65

Proposition 65

/!\ warningWARNING: Cancer and Reproductive Harm


Gary Biggs, a specialist in the exhaust sector, founded Flowtech Performance Exhaust in 1994 with the objective of providing high-quality performance exhaust at an affordable price. Their aim was accomplished, and in less than two decades, Flowtech established itself as the market leader in reasonably priced exhaust systems. Flowtech established a strong market position through the use of aggressive and unique product names such as RaptorTM, TerminatorTM, AfterburnerTM, and WarlockTM. Flowtech has even revived some vintage names, such as Purple HorniesTM.


Flowtech developed itself through simple yet effective enhancements such as slotted port flanges that provide additional wiggle space during header installation. They dimpled their tubes at the port to provide additional space for the header bolts and parallel ground their flanges to ensure a tight seal. Flowtech's new Afterburner headers utilize a velocity tube to separate the odd-firing cylinders and improve scavenging. These headers come in a variety of finishes, including polished stainless steel, chrome, ceramic coated, and black painted.

Their innovative Warlock bypass muffler was awarded the SEMA best new product award in 1996 for its groundbreaking open or closed design. When Flowtech was acquired by Holley Performance Products in 1999, the firm maintained a value-oriented philosophy, with an emphasis on late-model vehicles and trucks. For Mustangs, Camaros, and all types of full-size trucks, including diesels, headers and exhaust systems were designed. Today, the same idea is carried forward with the addition of universal X-pipe kits and X-pipe kits with integrated cut-outs. Continuous product upgrades and process improvements will ensure that Flowtech remains the market leader in value-priced exhaust systems.


The Flowtech product line includes both classic and innovative products such as exhaust systems, mufflers, builder components, x-pipes, y-pipes, h-pipes, engine mounts, headers, exhaust manifolds and many more.


Vivid Racing includes a wide collection of Flowtech products which include brackets, crankcase ventilation systems, exhaust gaskets, exhaust tips, flanges, headers, stickers, intake manifolds, mid pipes, mounts, and y pipes.

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