Although pipe diameter and mandrel bending have a significant effect on exhaust flow, by far the most important factor in improving exhaust flow, and sound, is the muffler. When factory mufflers are designed, making the vehicle quiet has priority over performance, because the quality of the sound from the speakers is much more important to the average driver than what comes out of the tailpipe. Our performance mufflers are designed for enthusiasts, not average drivers, because we know you not only want better exhaust flow for more horsepower, you want your car or truck to sound awesome.

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    • (0 reviews)
      # sp22766
      Super 10 Series Muffler by Flowmaster®. Flowmaster's Super 10 Series 409S Stainless Steel, Single Chamber mufflers are intended for customers who desire the loudest and most aggressive sound they can find. Because these mufflers are so...
    • (0 reviews)
      # sp18673
      Stainless Steel Crate Muffler by Borla®. Muffler Body Material: Stainless Steel. Muffler Body Length: 12". Muffler Body Height: 4.35". Muffler Body Width: 9.1". Muffler Body Shape: Oval. Give your ride the sound it deserves!...
      $220.99 - $255.99
    • (0 reviews)
      # sp109894
      Resonator Assembly by Borla®. Upgrade the looks, performance and sound of your ride with just a muffler swap. These Borla mufflers increase exhaust flow and horsepower, and they come fully polished with an exhaust tip already installed....
      $223.99 - $418.99
    • (0 reviews)
      # sp22595
      Muffler Replacement Kit by MagnaFlow®. MagnaFlow D-FIT kits replace the restrictive factory muffler, while maintaining the OEM piping & tailpipe. The straight through design muffler or muffler delete reduce backpressure creating more...
      $244.97 - $351.82
    • (0 reviews)
      # mpn4498129589
      FlowFX 409 SS Oval Brushed Exhaust Muffler by Flowmaster®. Muffler Inlet Diameter: 3". Muffler Outlet Diameter: 3". Muffler Body Length: 13". Muffler Overall Length: 56". Muffler Sound: Aggressive / Loud. Muffler Configuration: Dual -...
    • (1 review)
      # sp17064
      Outlaw™ Stainless Steel Direct-Fit Muffler by Flowmaster®, AGGRESSIVE SOUND. 3" Muffler Inlet / 2.25" Muffler Outlet. Muffler Shape: Oval. Dual Out Rear Exit. 3" Tubing. Flowmaster's Outlaw direct fit muffler is perfect for the person...
    • (0 reviews)
      # sp124072
      Street Muffler by Flowmaster®. The 2-chamber design of this muffler, incorporating the patented Flowmaster Delta Flow Technology, has enabled the company to create a performance muffler with an aggressive exterior sound combined with a...
      The Quietest Option in the 40 Series Two Chamber LineLess Resonance than other 40 Series Mufflers
      $210.38 - $221.46
    • (24 reviews)
      # sp114645
      Street Mufflers by Flowmaster®. The 2-chamber design of this muffler, incorporating the patented Flowmaster Delta Flow Technology, has enabled the company to create a performance muffler with an aggressive exterior sound combined with a...
      $192.74 - $387.97
    • (4 reviews)
      # sp38937
      Super 44 Series Delta Flow™ Muffler by Flowmaster®, , 4" Thick x 9.75" Wide x 13" Case Length x 19" Overall Length. The Super 44 has the deepest, richest, most aggressive muscle tone of all 4” street mufflers Flowmaster has ever...
    • (0 reviews)
      # mpn4478615059
      Sport Series Stainless Steel Exhaust Muffler Upgrade Kit by Corsa®. Muffler Inlet Diameter: 3". Muffler Outlet Diameter: 3". Flows 11.15% Better Than Stock. 6lbs Lighter Than Stock. CORSA's Patented Reflective Sound Cancellation® (RSC)...
      CNC Machined Donut ConnectionPremium Stainless Steel Construction
    • (0 reviews)
      # sp127898
      Exhaust Silencer by Remus®. Leave your factory exhaust behind and step out of a line with this ultra-powerful sport exhaust upgrade from REMUS. Using cutting-edge exhaust technology, this top-of-the-line tune-up is just the thing that...
      Aggressive racing soundShot blasted surface, 100% stainless steel
      $821.00 - $1,132.00
    • (0 reviews)
      # sp127899
      PowerSound Silencer by Remus®. Leave your factory exhaust behind and step out of a line with this ultra-powerful sport exhaust upgrade from REMUS. Using cutting-edge exhaust technology, this top-of-the-line tune-up is just the thing...
      Individual adjustable soundValve mechanisms & brackets made from stainless steel
      $786.00 - $1,157.00
    • (1 review)
      # sp13641
      304 SS Muffler Kit by Stainless Works®. This superior product is made from high-grade stainless steel to ensure excellent quality and maximum resistance to corrosion. Engineered with careful attention to the smallest detail using the...
      Designed to meet strict quality standardsCarefully crafted from first-rate stainless steel
    • (0 reviews)
      # sp66773
      304 SS High-Flow Muffler by MBRP®. Tame that exhaust system with a perforated-core muffler. By using a straight piece of pipe that’s been perforated with countless small holes, MBRP lets the higher-frequency bark and rasp through, to...
    • (0 reviews)
      # sp12485
      304 SS Muffler Bypass Kit by MBRP®. Let it all hang out and bypass the muffler entirely on your Porsche. Constructed from high Quality 304 Stainless Steel steel you can count on this pipe lasting for years to come..
      Dramatic Improvement Of Sound For Any 991 GT3 or GT3RSDurable T304 Black Coated Steel Construction
    • (0 reviews)
      # mpn4488951080
      Valvetronic Exhaust Mufflers by Fabspeed®. Valved stainless steel rear mufflers provide improved sports car sound and power when installed with the factory resonated mid-pipe. Valved rear mufflers improve exhaust note and allow for full...
      Valved rear mufflers allow for full control of the sound level via the factory Sport buttonSimple bolt-on installation; no cutting or welding required
    • (0 reviews)
      # sp3649
      Monster™ Stainless Steel Mufler by Banks®. Get increased power and torque from reduced backpressure with this straight-through muffler. With its straight-through, massive 4” core, this muffler presents essentially no backpressure to...
      $163.42 - $357.58
    • (0 reviews)
      # sp126582
      Exhaust Mufflers by DB®. Straight through nonrestrictive system design maximizes airflow improving performance and fuel economy. All components even clamps and hangers of the system are constructed of premium grade stainless steel to...
      Engineered Specifically for Each ApplicationSound Tuned to Character of Vehicle
      $344.24 - $547.87
    • (1 review)
      # sp48761
      H-Box Muffler by Pypes®. Replaces center resonator with high flow Muffler. Installs in less than 20 minutes. Cut two mid pipes and bolt right in for 10hp and incredible sound. Comes with gasket, clamps, and hardware.
      $11.97 - $197.97
    • (5 reviews)
      # sp29021
      Violator™ Muffler by Pypes®. The Violator is the newest muffler and has already gained acceptance and praise in the marketplace. It flows as much air as our Race-Pro muffler but has an incredibly unique and aggressive sound! The...
    • (1 review)
      # sp109906
      Race Series Bullet Muffler by DynoMax®. DynoMax® Race Bullet mufflers feature 100-percent welded construction for lifelong durability. The 'Pure Unadulterated POWER' and lightweight, compact design make it the ultimate race muffler....
      $55.08 - $79.43
    • (0 reviews)
      # sp4407
      Resonator by DynoMax®. This part provides an additional sound control and is a great add-on to the exhaust system. Working in tandem with the muffler, it will ensure a more efficient sound reduction and achieve a particular exhaust tone.
      $86.40 - $187.52
    • (7 reviews)
      # sp4401
      Super Turbo™ Muffler by DynoMax®. Get improved exhaust flow and reduced back pressure for better performance, and a mellow tone without annoying interior resonance, with this Super Turbo Muffler. Its patented flow directors and large...
      $56.25 - $159.95
    • (1 review)
      # sp4402
      Ultra Flo™ Polished Stainless Steel Muffler by DynoMax®. This muffler packs straight-through design for unrestricted exhaust flow and a dyno-proven increase in power inside a polished stainless steel shell that delivers a show quality...
      $74.39 - $334.12
    • (2 reviews)
      # sp4403
      Ultra Flo™ Welded Muffler by DynoMax®. This muffler-back exhaust system includes pipe, clamps and Ultra Flo™ Welded muffler that features unrestricted, straight-through design for a dyno-proven increase in power and maintains a deep...
      $66.93 - $226.61
    • (0 reviews)
      # sp28803
      Afterburner™ Muffler by Flowtech®. If you really want great sound and maximum horsepower, kick on the Afterburner - and kick a little butt. FLOWTECH Afterburner mufflers are your very best bet for optimum performance and awesome...
      $59.96 - $78.17
    • (0 reviews)
      # sp28805
      Terminator Series Muffler by Flowtech®. The Terminator is constructed entirely of super thick, fully welded aluminized steel, with huge 3” inner pass tubes that reduce backpressure and increase horsepower like no other muffler can....
      $84.59 - $219.95
    • (0 reviews)
      # sp20699
      Aero Chamber™ Muffler by Hooker®. Muffler Series: Aero Chamber™. Inlet Diameter: 3". Outlet Diameter: 2.5". Muffler Body Height: 4.75". Muffler Body Width: 10.25". Muffler Body Length: 20". Bi-Directional Turbo Style. The all...
      $80.60 - $101.95
    • (0 reviews)
      # sp20700
      Competition™ Turbo Muffler by Hooker®. Muffler Series: Competition™. Inlet Diameter: 2.25". Outlet Diameter: 2.25". Muffler Body Height: 4.25". Muffler Body Width: 9.75". Muffler Body Length: 14". Oval Shaped Double Wrapped...
    • (0 reviews)
      # sp28855
      Sidetube Slip-In Muffler by Hooker®. For 4" sidetube sound control, Hooker builds long lasting slip-in mufflers. These mufflers are easily removed for racing purposes and are available in a performance style glasspack or our quieter all...
      $203.95 - $246.95

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    When an engine operates, both exhaust gas and the sound waves created by engine combustion travel through the exhaust system. Factory mufflers are constructed to effectively quiet the sound, but in the process substantially restrict exhaust flow, which creates excessive backpressure that can significantly reduce an engine’s power output. Replacing the restrictive OE muffler with a performance muffler will increase flow and allow your engine to produce the power it’s capable of, and at the same time provide an exhaust note that will let everyone know your ride isn’t just another stock machine.

    But creating a performance muffler takes a lot of hard work, because while everyone wants increased exhaust flow and more power, we don’t all want the same exhaust tone. Modern performance muffler fabrication starts with sophisticated computer aided design and proprietary software. Our manufacturers perform extensive R&D work with airflow and acoustical test equipment, as well as dyno and real world on-vehicle testing. Several muffler designs are used to achieve performance and sound goals. Chambered mufflers have internal chambers that reflect and cancel out sound waves without reducing exhaust flow; turbo mufflers have several perforated tubes to reduce sound while reducing backpressure; and straight through mufflers have a perforated tube surrounded by sound absorbing packing.

    Regardless of design, it’s the end result that counts. No matter what you drive or do with your vehicle, we have mufflers to suit your needs, from the top performance exhaust companies. Whether you’re racing or towing a boat, have a screaming turbo 4-cylinder or big V8, we have the mufflers to give you the power and sound you want. If you tow a trailer with your truck you may want more pulling power but with just a moderate rumble and minimal resonance inside the cabin. Or you may have a big inch street machine and want the least restriction and most aggressive sound available. Many race tracks and racing organizations have decibel restrictions which require mufflers that reduce noise but with minimum restriction. We offer mufflers for each of these applications and more.

    Besides getting the right power and sound, the performance mufflers on our digital shelves are also available in a variety of shapes, dimensions, and configurations, with a wide range of inlet and outlet diameters, so you can get the muffler that perfectly fits your exhaust system and space requirements. Most are universal fitment and ideal for custom exhaust building, but we also have vehicle specific mufflers. Our selection includes round, oval, compact, low profile, and slimline designs; as well as collector mufflers, mufflers with integral exhaust tips, and much more. Our mufflers will deliver the power and sound you want today and well into the future, because each is constructed from long lasting, durable materials like stainless steel or aluminized steel.

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    Guides & Articles

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      May 17, 2016
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      Performance exhaust systems give you improvements in power output, sound levels, and appearance, all in one package. But let's face it: not everyone has the spare...
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    • Replacement Exhaust Parts
      August 01, 2014
      Direct Fit vs. Universal Mufflers
      Regardless of whether you're shopping for a simple replacement muffler that delivers original equipment (OE) sound and performance or an upgraded muffler which...
      by Michael Grayen

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    4.8 of 5
    Great Product
    Easy to install if you can weld. Truck has a good sound now.
    JPosted by Joel (Springtown, TX) / January 3, 2018
    2001 Volkswagen Jetta
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