Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
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Shop Muscle Car Headers & Exhaust At Speedway Motors

Speedway Motors has the muscle car headers and mufflers you need, at a price you can afford. Check out our huge inventory of chassis headers, LS1 swap headers and tight-fit block hugger headers, all available with durable ceramic AHC coating, polished, or stainless steel. Don't forget about our cast iron exhaust manifolds and dual exhaust kits as well. With an awesome selection of high performance Flowmaster mufflers, exhaust wrap, glasspacks, and exhaust tips, Speedway can help you get the roar you want from your muscle car without the roar from your wife for spending too much money!

"Muscle Car, Mufflers" Page 1 of 3

  • Smithys Glasspack Muffler, 22 Inch Body, 2 Inch Inlet/Outlet
    Smithys Glasspack Muffler, 22 Inch Body, 2 Inch Inlet/Outlet
    x
                

    Smithy's Glass Pack Mufflers are designed for great performance with excellent tone. Double end cap construction and 3-1/2" hammertone finished cases assure the original Smithy look.

    • World's oldest performance muffler
    • Perfect for that resto-rod or 1950's custom
    • 3-1/2" diameter seamed steel case
    • 2" I.D. inlet and outlet

    Not legal for sale or use in California on pollution controlled motor vehicles.

  • Smithys Glasspack Muffler, 26 Inch Body, 2 Inch Inlet/Outlet
    Smithys Glasspack Muffler, 26 Inch Body, 2 Inch Inlet/Outlet
    x
                

    Smithy's Glass Pack Mufflers are designed for great performance with excellent tone. Double end cap construction and 3-1/2" hammertone finished cases assure the original Smithy look.

    • World's oldest performance muffler
    • Perfect for that resto-rod or 1950's custom
    • 3-1/2" diameter seamed steel case
    • 2" I.D. inlet and outlet

    Not legal for sale or use in California on pollution controlled motor vehicles.

  • Smithys Glasspack Muffler, 30 Inch Body, 2 Inch Inlet/Outlet
    Smithys Glasspack Muffler, 30 Inch Body, 2 Inch Inlet/Outlet
    x
                

    Smithy's Glass Pack Mufflers are designed for great performance with excellent tone. Double end cap construction and 3-1/2" hammertone finished cases assure the original Smithy look.

    • World's oldest performance muffler
    • Perfect for that resto-rod or 1950's custom
    • 3-1/2" diameter seamed steel case
    • 2" I.D. inlet and outlet

    Not legal for sale or use in California on pollution controlled motor vehicles.

  • Stainless Steel Bullet Muffler
    From: $87.99
    Product Rating: 5.00 Stars
    Stainless Steel Bullet Muffler
    x
                This stainless steel bullet muffler features a 16 gauge stainless steel wall and is fiberglass packed. 3" diameter, 24-1/2" overall length and 18" case length, 2" I.D. inlet and outlet.   

    Not legal for sale or use in California on pollution controlled motor vehicles.

  • Flowmaster 42541 2-1/2 Inch Muffler, Offset Inlet/Centered Outlet
    Flowmaster 42541 2-1/2 Inch Muffler, Offset Inlet/Centered Outlet
    x
                

    The American Thunder 40 Series is the most aggressive sounding street and strip muffler in Flowmaster's product line. The 40 Series will generate extreme interior resonance within the vehicle. If you want to really hear your exhaust system inside as well as outside your vehicle the 40 Series is for you. These mufflers take the sound waves produced in the exhaust, and cancel them against angled baffles built into the muffler case. This improves both horsepower and fuel economy.

    The Flowmaster 40 Series two chamber muffler is the original bad boy for street/strip cars. Made of 16 gauge, aluminized steel, the unique design cancels out noise, but makes big power.

    • 40 Series Muffler
    • Offset inlet/centered outlet
    • 2-1/2" Diameter
    • 19" long, 9-3/4" wide and 4" thick
    • Body alone is 13" long
    • 16 gauge, aluminized steel
    • Most aggressive sound in the Flowmaster muffler line
    • Use on street or strip vehicles
    • More power and less noise
    • Sold each
  • Moroso 94054 Hi-Flow 2-1/2 Inch Polished Stainless Mufflers
    Moroso 94054 Hi-Flow 2-1/2 Inch Polished Stainless Mufflers
    x
                

    If you want good looks and high performance but have limited space, these are for you. Beautifully polished stainless steel mufflers have a small 4" O.D. and have a 12" installed length. Spiral baffle is less restrictive and won't burn out like a glasspack. 2-1/2" inlet and outlet.

    • Reduced noise levels with minimal back pressure
    • Stainless steel construction makes them durable without compromising the looks 
  • Seamless Glasspack Header Muffler, 3 Inch In, 2 Inch Out
    Seamless Glasspack Header Muffler, 3 Inch In, 2 Inch Out
    x
                

    These seamless glasspack header mufflers feature a six-row louvered core for reduced restriction and better sound absorption. Long strand sound absorption material increases muffler life. Accommodates most 3-bolt header flanges.

    3-1/2" diameter, 33-1/4" long. 2" I.D. outlets.

    Not legal for sale or use in California on pollution controlled motor vehicles.

  • Dynatech   772-32520 Vortex Insert Cone, 3 Inch
    Dynatech 772-32520 Vortex Insert Cone, 3 Inch
    x
                

    Let's face it, open exhaust is a thing of the past! Sound requirements, mandatory mufflers, or maximum db level are found in all forms of racing today. From Mini-Stock to Outlaw Sprint Cars, reducing the sound level is becoming the norm. Today's racers are spending thousands of dollars to go racing. The last thing they want to do is get put on the trailer for too much noise. The Vortex Insert Cone can help you keep on track. That's sound insurance!

    • 100% T-304 stainless steel construction
    • Compact size fits all racing applications
    • Ultra lightweight - less that 1/2 lb. each
    • Little or no power loss
    • Easy bolt-in installation
    • Typically good for a 1-3 reduction in db 

    Typically good for a 1-3 dB reduction.

    How It Works (JPEG)

  • Flowmaster 42441 2-1/4 Inch Muffler, Offset Inlet/Centered Outlet
    Flowmaster 42441 2-1/4 Inch Muffler, Offset Inlet/Centered Outlet
    x
                

    The American Thunder 40 Series is the most aggressive sounding street and strip muffler in Flowmaster's product line. The 40 Series will generate extreme interior resonance within the vehicle. If you want to really hear your exhaust system inside as well as outside your vehicle the 40 Series is for you. 

    The Flowmaster 40 Series two chamber muffler is the original bad boy for street/strip cars. Made of 16 gauge, aluminized steel, the unique design cancels out noise, but makes big power.

    Overall measurement is 19" long, 9-3/4" wide and 4" thick. Body alone is 13" long. 

    40 Series Muffler, 2.25" IN (O) / OUT (C): ea

  • Flowmaster 12418400 Hushpower II 409 Muffler 2.25 Inch ID 18 Inch Case
    Flowmaster 12418400 Hushpower II 409 Muffler 2.25 Inch ID 18 Inch Case
    x
                These Hushpower II mufflers are made of durable T-409 stainless steel and are the  perfect match for any street application up to 400 horsepower. Their  Cool Shell technology gives you a great sound and also helps control heat  transfer to your floor pan. 

    Measures 5-1/2" wide and 4" thick.

    Hushpower Muffler Cross Section (Link)

    • T-409 Stainless Steel internals
    • Redirects sound energy back into itself without losing flow
    • Thermal barrier allows muffer to be placed closer to heat sensitive areas

     

  • Dynatech   772-32540 Vortex Insert Cones, 4-1/2 Inch
    Dynatech 772-32540 Vortex Insert Cones, 4-1/2 Inch
    x
                

    Let's face it, open exhaust is a thing of the past! Sound requirements, mandatory mufflers, or maximum db level are found in all forms of racing today. From Mini-Stock to Outlaw Sprint Cars, reducing the sound level is becoming the norm. Today's racers are spending thousands of dollars to go racing. The last thing they want to do is get put on the trailer for too much noise. The Vortex Insert Cone can help you keep on track. That's sound insurance! 

    Typically good for a 1-3 dB reduction.

    • 100% T-304 stainless steel construction
    • Compact size fits all racing applications
    • Ultra lightweight - less that 1/2 lb. each
    • Little or no power loss
    • Easy bolt-in installation
    • Typically good for a 1-3 reduction in db 

    How It Works (JPEG)

  • Flowmaster Mufflers 942448 Super 44 2.25 In. Muffler, Offset In/Outlet
    Flowmaster Mufflers 942448 Super 44 2.25 In. Muffler, Offset In/Outlet
    x
                

    This is the muffler you have been waiting for. The Flowmaster crew has been developing this muffler over the last two years to provide the best sound while retaining maximum performance. The body measures 4" x 9-1/2" x 13" long so it can fit up under your car.

    • 2.25" In (O) / Out (O)
    • 4" x 9.75" x 13" Case

     

  • Flowmaster 12412400 Hushpower II 409 Muffler 2.25 Inch ID 12 Inch Case
    Flowmaster 12412400 Hushpower II 409 Muffler 2.25 Inch ID 12 Inch Case
    x
                These Hushpower II mufflers are made of durable T-409 stainless steel and are the  perfect match for any street application up to 400 horsepower. Their  Cool Shell technology gives you a great sound and also helps control heat  transfer to your floor pan. 

    Measures 5-1/2" wide and 4" thick.

    Hushpower Muffler Cross Section (Link)

    • T-409 Stainless Steel internals
    • Redirects sound energy back into itself without losing flow
    • Thermal barrier allows muffer to be placed closer to heat sensitive areas

     

  • Flowmaster 12518300 Hushpower II 304 Muffler 2.5 Inch ID, 18 Inch Case
    Flowmaster 12518300 Hushpower II 304 Muffler 2.5 Inch ID, 18 Inch Case
    x
                

    These Hushpower II mufflers have a T-304 stainless steel shell and are the perfect match for any street application up to 400 horsepower. Their Cool Shell technology gives you a great sound and also helps control heat transfer to your floor pan.

    Muffler comes in a raw finish, but you can polish the T-304 shell to a show car luster. Measures 5-1/2" wide and 4" thick.

    Hushpower Muffler Cross Section (Link)

    • T-409 Stainless Steel internals
    • Redirects sound energy back into itself without losing flow
    • Thermal barrier allows muffer to be placed closer to heat sensitive areas

     

  • Dynatech Vortex Exhaust Turn Down with 4 Inch Cone
    Dynatech Vortex Exhaust Turn Down with 4 Inch Cone
    x
                

    The Vortex Turn Down is expanded to slip over the collector outlet or tailpipe.  Greater sound reduction can be achieved by directing the outlet away from meter or sound test point.  U-tab mounting hardware is included.

    • 100% T-304 stainless steel construction
    • Compact size fits all racing applications
    • Ultra lightweight - less than 1/2 lb. each (cone)
    • Little or no power loss
    • Easy bolt-in installation
    • Turn down with insert cone available in 4" diameter 

    How it works: The Vortex Insert Cone installed near the exit of the header collector or muffler outlet provides a large friction area to reflect and dissipate sound energy, thus reducing the dB level.  The open area of the cone is actually greater than the area of the collector or exhaust pipe, thus reducing a back pressure condition.  Because no significant back pressure has been introduced, the engine is still able to use the scavenge ability of a good header to create horsepower and torque.  Dyno and track tested show significant noise reduction with little or no power loss.

  • Flowmaster 12012400 Hushpower II 409 Muffler, 2 Inch I.D.-12 Inch Case
    Flowmaster 12012400 Hushpower II 409 Muffler, 2 Inch I.D.-12 Inch Case
    x
                These Hushpower II mufflers are made of durable T-409 stainless steel and are the  perfect match for any street application up to 400 horsepower. Their  Cool Shell technology gives you a great sound and also helps control heat  transfer to your floor pan. 

    Hushpower Muffler Cross Section (Link)

    • T-409 Stainless Steel internals
    • Redirects sound energy back into itself without losing flow
    • Thermal barrier allows muffer to be placed closer to heat sensitive areas

    Measures 5-1/2" wide and 4" thick.

  • Dynatech   776-14252 Oval Split Flow Mufflers, 2-1/2 Inch
    Dynatech 776-14252 Oval Split Flow Mufflers, 2-1/2 Inch
    x
                

    The Split-Flow racing muffler is the "hot topic" among racers, and for good reason. The exclusive dual pattern core reduces dB level while maintaining a powerful sound. The all-aluminized, full welded construction makes it a top choice for racing and high performance applications. 

    • Straight-thru design for maximum flow
    • Stainless steel sound absorbing material for no burnout
    • Lightweight design (only 7.2 lbs)
    • Meets or exceeds db requirements at most muffler-required sanctioned events
    • Typical 8-10 dB reduction
    • Case Length:  14"
    • Case Width:  7"
    • Case Thickness:  4.5"
  • Flowmaster 952546 Super 40 Muffler-Offset Inlet-Centered Outlet, 2-1/2
    Flowmaster 952546 Super 40 Muffler-Offset Inlet-Centered Outlet, 2-1/2
    x
                

    The Flowmaster Super 40 Series Muffler is the most aggressive street muffler Flowmaster offers. It has the deepest tone while retaining the classic two chamber race design.

    The Super 40 5X10 inch case design, modeled after Flowmaster's Top Ten race mufflers, gives you a deeper tone that retains Flowmaster's 40 Series sound and feel. Flowmaster's Super 40 is the most aggressive, deepest sounding street 2-chamber muffler.

    • The body measures 13" long, 10" wide and 5" thick
  • Dynatech   772-32510 Vortex Insert Cone, 3-1/2 Inch
    Dynatech 772-32510 Vortex Insert Cone, 3-1/2 Inch
    x
                

    Let's face it, open exhaust is a thing of the past! Sound requirements, mandatory mufflers, or maximum db level are found in all forms of racing today. From Mini-Stock to Outlaw Sprint Cars, reducing the sound level is becoming the norm. Today's racers are spending thousands of dollars to go racing. The last thing they want to do is get put on the trailer for too much noise. The Vortex Insert Cone can help you keep on track. That's sound insurance!

    • 100% T-304 stainless steel construction
    • Compact size fits all racing applications
    • Ultra lightweight - less that 1/2 lb. each
    • Little or no power loss
    • Easy bolt-in installation
    • Typically good for a 1-3 reduction in db 

    Typically good for a 1-3 dB reduction.

    How It Works (JPEG)

  • Seamless Glasspack Header Muffler, 3-1/2 Inch In, 2 Inch Out
    Seamless Glasspack Header Muffler, 3-1/2 Inch In, 2 Inch Out
    x
                

    These seamless glasspack header mufflers feature a six-row louvered core for reduced restriction and better sound absorption. Long strand sound absorption material increases muffler life. Accommodates most 3-bolt header flanges.

    3-1/2" diameter, 33-1/4" long. 2" I.D. outlets.

    Not legal for sale or use in California on pollution controlled motor vehicles.

  • Flowmaster Mufflers 43043 40 Series Muffler, Offset Inlet/Outlet, 3 In
    Flowmaster Mufflers 43043 40 Series Muffler, Offset Inlet/Outlet, 3 In
    x
                The Flowmaster 40 Series two chamber muffler is the original bad boy  for street/strip cars. Made of 16 gauge, aluminized steel, the unique  design cancels out noise, but makes big power.

    Overall measurement is 19" long, 9-3/4" wide and 4" thick. Body alone is 13" long.
  • Flowmaster Mufflers 943048 Super 44 Muffler, Offset Inlet/Outlet, 3 In
    Flowmaster Mufflers 943048 Super 44 Muffler, Offset Inlet/Outlet, 3 In
    x
                

    This is the muffler you have been waiting for. The Flowmaster crew has been developing this muffler over the last two years to provide the best sound while retaining maximum performance. The body measures 4" x 9-1/2" x 13" long so it can fit up under your car.

    • 3" In (O) / Out (O)
    • 4" x 9.75" x 13" Case

     

  • Flowmaster Mufflers 952548 Super 40 2.5 Inch Muffler, Offset In/Outlet
    Flowmaster Mufflers 952548 Super 40 2.5 Inch Muffler, Offset In/Outlet
    x
                

    The Flowmaster Super 40 Series Muffler is the most aggressive street muffler Flowmaster offers. It has the deepest tone while retaining the classic two chamber race design.

    The Super 40 5 x 10 inch case design, modeled after Flowmaster's Top Ten race mufflers, gives you a deeper tone that retains Flowmaster's famous 40 Series sound and feel. Their Super 40 is the most aggressive, deepest sounding street 2-chamber muffler. The classic black case maintains that original Flowmaster look. 

    •  The body measures 13" long, 10" wide and 5" thick
  • Flowmaster Mufflers 953048 Super 40 Muffler, Offset Inlet/Outlet, 3 In
    Flowmaster Mufflers 953048 Super 40 Muffler, Offset Inlet/Outlet, 3 In
    x
                

    The Flowmaster Super 40 Series Muffler is the most aggressive street muffler Flowmaster offers. It has the deepest tone while retaining the classic two chamber race design.

    The Super 40 5 x 10 inch case design, modeled after Flowmaster's Top Ten race mufflers, gives you a deeper tone that retains Flowmaster's famous 40 Series sound and feel. Their Super 40 is the most aggressive, deepest sounding street 2-chamber muffler. The classic black case maintains that original Flowmaster look. 

    •  The body measures 13" long, 10" wide and 5" thick
  • Flowmaster 942546 Super 44 Muffler-Offset Inlet-Centered Outlet, 2-1/2
    Flowmaster 942546 Super 44 Muffler-Offset Inlet-Centered Outlet, 2-1/2
    x
                

    This is the muffler you have been waiting for. The Flowmaster crew has been developing this muffler over the last two years to provide the best sound while retaining maximum performance.

    The body measures 4" x 9-3/4" x 13" long so it can fit up under your car.

  • Flowmaster 12412300 Hushpower II 304 Muffler 2.25 Inch ID 12 Inch Case
    Flowmaster 12412300 Hushpower II 304 Muffler 2.25 Inch ID 12 Inch Case
    x
                

    These Hushpower II mufflers have a T-304 stainless steel shell and are the perfect match for any street application up to 400 horsepower. Their Cool Shell technology gives you a great sound and also helps control heat transfer to your floor pan.

    Muffler comes in a raw finish, but you can polish the T-304 shell to a show car luster. Measures 5-1/2" wide and 4" thick.

    Hushpower Muffler Cross Section (Link)

    • T-409 Stainless Steel internals
    • Redirects sound energy back into itself without losing flow
    • Thermal barrier allows muffer to be placed closer to heat sensitive areas

     

  • Dynatech   776-14352 Oval Split Flow Mufflers, 3-1/2 Inch
    Dynatech 776-14352 Oval Split Flow Mufflers, 3-1/2 Inch
    x
                

    The Split-Flow racing muffler is the "hot topic" among racers, and for good reason. The exclusive dual pattern core reduces dB level while maintaining a powerful sound. The all-aluminized, full welded construction makes it a top choice for racing and high performance applications. 

    • Straight-thru design for maximum flow
    • Stainless steel sound absorbing material for no burnout
    • Lightweight design (only 7.2 lbs)
    • Meets or exceeds db requirements at most muffler-required sanctioned events
    • Typical 8-10 dB reduction
    • Case Length:  14"
    • Case Width:  7"
    • Case Thickness:  4.5"
  • Flowmaster Mufflers 42443 40 Series 2.25 In. Muffler, Offset In/Outlet
    Flowmaster Mufflers 42443 40 Series 2.25 In. Muffler, Offset In/Outlet
    x
                The Flowmaster 40 Series two chamber muffler is the original bad boy  for street/strip cars. Made of 16 gauge, aluminized steel, the unique  design cancels out noise, but makes big power.

    Overall measurement is 19" long, 9-3/4" wide and 4" thick. Body alone is 13" long.
  • Flowmaster 952446 Super 40 Muffler-Offset Inlet-Centered Outlet, 2-1/4
    Flowmaster 952446 Super 40 Muffler-Offset Inlet-Centered Outlet, 2-1/4
    x
                

    The Flowmaster Super 40 Series Muffler is the most aggressive street muffler Flowmaster offers. It has the deepest tone while retaining the classic two chamber race design.

    The Super 40 5X10 inch case design, modeled after Flowmaster's Top Ten race mufflers, gives you a deeper tone that retains Flowmaster's 40 Series sound and feel. Flowmaster's Super 40 is the most aggressive, deepest sounding street 2-chamber muffler.

    • The body measures 13" long, 10" wide and 5" thick
  • Flowmaster 953046 Super 40 3 In. Muffler, Offset Inlet-Centered Outlet
    Flowmaster 953046 Super 40 3 In. Muffler, Offset Inlet-Centered Outlet
    x
                

    The Flowmaster Super 40 Series Muffler is the most aggressive street muffler Flowmaster offers. It has the deepest tone while retaining the classic two chamber race design.

    The Super 40 5X10 inch case design, modeled after Flowmaster's Top Ten race mufflers, gives you a deeper tone that retains Flowmaster's 40 Series sound and feel. Flowmaster's Super 40 is the most aggressive, deepest sounding street 2-chamber muffler.

    • The body measures 13" long, 10" wide and 5" thick
  • Dynatech   776-14302 Oval Split Flow Mufflers, 3 Inch
    Dynatech 776-14302 Oval Split Flow Mufflers, 3 Inch
    x
                

    The Split-Flow racing muffler is the "hot topic" among racers, and for good reason. The exclusive dual pattern core reduces dB level while maintaining a powerful sound. The all-aluminized, full welded construction makes it a top choice for racing and high performance applications. 

    • Straight-thru design for maximum flow
    • Stainless steel sound absorbing material for no burnout
    • Lightweight design (only 7.2 lbs)
    • Meets or exceeds db requirements at most muffler-required sanctioned events
    • Typical 8-10 dB reduction
    • Case Length:  14"
    • Case Width:  7"
    • Case Thickness:  4.5"
  • Flowmaster 43041 40 Series 3 In. Muffler, Offset Inlet-Centered Outlet
    Flowmaster 43041 40 Series 3 In. Muffler, Offset Inlet-Centered Outlet
    x
                

    The American Thunder 40 Series is the most aggressive sounding street and strip muffler in Flowmaster's product line. The 40 Series will generate extreme interior resonance within the vehicle. If you want to really hear your exhaust system inside as well as outside your vehicle the 40 Series is for you. 

    The Flowmaster 40 Series two chamber muffler is the original bad boy for street/strip cars. Made of 16 gauge, aluminized steel, the unique design cancels out noise, but makes big power.

    Overall measurement is 19" long, 9-3/4" wide and 4" thick. Body alone is 13" long. 

    40 Series Muffler, 3" IN (O) / OUT (C): ea

  • Flowmaster 12018400 Hushpower II 409 Muffler, 2 Inch I.D.-18 Inch Case
    Flowmaster 12018400 Hushpower II 409 Muffler, 2 Inch I.D.-18 Inch Case
    x
                These Hushpower II mufflers are made of durable T-409 stainless steel and are the  perfect match for any street application up to 400 horsepower. Their  Cool Shell technology gives you a great sound and also helps control heat  transfer to your floor pan. 

    Measures 5-1/2" wide and 4" thick.

    Hushpower Muffler Cross Section (Link)

    • T-409 Stainless Steel internals
    • Redirects sound energy back into itself without losing flow
    • Thermal barrier allows muffer to be placed closer to heat sensitive areas

     

  • Flowmaster Mufflers 952448 Super 40 2.25 In. Muffler, Offset In/Outlet
    Flowmaster Mufflers 952448 Super 40 2.25 In. Muffler, Offset In/Outlet
    x
                

    The Flowmaster Super 40 Series Muffler is the most aggressive street muffler Flowmaster offers. It has the deepest tone while retaining the classic two chamber race design.

    The Super 40 5 x 10 inch case design, modeled after Flowmaster's Top Ten race mufflers, gives you a deeper tone that retains Flowmaster's famous 40 Series sound and feel. Their Super 40 is the most aggressive, deepest sounding street 2-chamber muffler. The classic black case maintains that original Flowmaster look. 

    •  The body measures 13" long, 10" wide and 5" thick
  • Dynatech   772-32530 Vortex Insert Cones, 4 Inch
    Dynatech 772-32530 Vortex Insert Cones, 4 Inch
    x
                

    Let's face it, open exhaust is a thing of the past! Sound requirements, mandatory mufflers, or maximum db level are found in all forms of racing today. From Mini-Stock to Outlaw Sprint Cars, reducing the sound level is becoming the norm. Today's racers are spending thousands of dollars to go racing. The last thing they want to do is get put on the trailer for too much noise. The Vortex Insert Cone can help you keep on track. That's sound insurance!

    • 100% T-304 stainless steel construction
    • Compact size fits all racing applications
    • Ultra lightweight - less that 1/2 lb. each
    • Little or no power loss
    • Easy bolt-in installation
    • Typically good for a 1-3 reduction in db 

    Typically good for a 1-3 dB reduction.

    How It Works (JPEG)

  • Dynatech Vortex Exhaust Turn Down with 3 Inch Cone
    Dynatech Vortex Exhaust Turn Down with 3 Inch Cone
    x
                

    The Vortex Turn Down is expanded to slip over the collector outlet or tailpipe.  Greater sound reduction can be achieved by directing the outlet away from meter or sound test point.  U-tab mounting hardware is included.

    • 100% T-304 stainless steel construction
    • Compact size fits all racing applications
    • Ultra lightweight - less than 1/2 lb. each (cone)
    • Little or no power loss
    • Easy bolt-in installation
    • Turn down with insert cone available in 3" diameter 

    How it works: The Vortex Insert Cone installed near the exit of the header collector or muffler outlet provides a large friction area to reflect and dissipate sound energy, thus reducing the dB level.  The open area of the cone is actually greater than the area of the collector or exhaust pipe, thus reducing a back pressure condition.  Because no significant back pressure has been introduced, the engine is still able to use the scavenge ability of a good header to create horsepower and torque.  Dyno and track tested show significant noise reduction with little or no power loss.

  • Dynatech   776-06352 Split Flow Race Muffler, 3-1/2 Inch Inlet/Outlet
    Dynatech 776-06352 Split Flow Race Muffler, 3-1/2 Inch Inlet/Outlet
    x
                

    The Split-Flow racing muffler is the "hot topic" among racers, and for good reason. The exclusive dual pattern core reduces dB level while maintaining a powerful sound. The all-aluminized, full welded construction makes it a top choice for racing and high performance applications. 

    • Straight-thru design for maximum flow
    • Stainless steel sound absorbing material for no burnout
    • Lightweight design (only 3.8 lbs)
    • Meets or exceeds db requirements at most muffler-required sanctioned events
    • Typical 6-8 dB reduction
  • Dynatech   776-14402 Oval Split Flow Muffler, 4 Inch
    Dynatech 776-14402 Oval Split Flow Muffler, 4 Inch
    x
                

    The Split-Flow racing muffler is the "hot topic" among racers, and for good reason. The exclusive dual pattern core reduces dB level while maintaining a powerful sound. The all-aluminized, full welded construction makes it a top choice for racing and high performance applications. 

    • Straight-thru design for maximum flow
    • Stainless steel sound absorbing material for no burnout
    • Lightweight design (only 7.2 lbs)
    • Meets or exceeds db requirements at most muffler-required sanctioned events
    • Typical 8-10 dB reduction
    • Case Length:  14"
    • Case Width:  7"
    • Case Thickness:  4.5"
  • Seamless Glasspack Header Muffler, 2-1/2 Inch In, 2 Inch Out
    Seamless Glasspack Header Muffler, 2-1/2 Inch In, 2 Inch Out
    x
                

    These seamless glasspack header mufflers feature a six-row louvered core for reduced restriction and better sound absorption. Long strand sound absorption material increases muffler life. Accommodates most 3-bolt header flanges.

    3-1/2" diameter, 33-1/4" long. 2" I.D. outlets.

    Not legal for sale or use in California on pollution controlled motor vehicles.

  • Flowmaster 943046 Super 44 3 In. Muffler, Offset Inlet-Centered Outlet
    Flowmaster 943046 Super 44 3 In. Muffler, Offset Inlet-Centered Outlet
    x
                

    This is the muffler you have been waiting for. The Flowmaster crew has been developing this muffler over the last two years to provide the best sound while retaining maximum performance.

    The body measures 4" x 9-3/4" x 13" long so it can fit up under your car.

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