H.A.R.M. Mufflers - Herfurth Aluminum Racing Mufflers

Mufflers

H.A.R.M. Mufflers

We offer round body mufflers, oval body mufflers, and larger rectangle body mufflers.

Please keep in mind that all of the dimensions listed here are simply “stock” options. We do A LOT of mufflers outside of these dimensions, and custom orders are welcome!

Cases can be 4”, 5”, or 6”

Round

Case is 4.5” tall x 7.5” wide

Oval

Custom, contact for pricing

Rectangle

virus vent race muffler

Loud/Aggressive Tone

Straight-Through

Our Virus Vent race muffler’s design promotes maximum flow!

A loud and rowdy muffler offering some DB reduction, make no mistake – it’s designed to be “race volume.”

  • Exhaust sizes: 2.5”, 3”, and 3.5”
  • Standard case length: 9”
  • Overall length: approximately 12”

Round body mufflers $175-$200 each (depending on sizes)
Oval body add +$25 per muffler

drag & drive muffler

Smoother/Softer Tone

Straight-Through

Our Drag & Drive mufflers use a perforated titanium core!

A high-performance muffler that offers good DB reduction, it’s 50% open for maximum sound absorption into our proprietary 3-layer design packing.

  • Exhaust sizes: 2.5”, 3”, 3.5” and 4” (contact us for 4.5” and 5”)
  • Standard case length: 12”
  • Overall length: approximately 15”

Round body mufflers $275-$300 each (depending on sizes)
Oval body add +$25 per muffler

Dump Kits

Our late model dump kits let you add the H.A.R.M. sound to your existing exhaust in a lightweight, easy-to-add-on system!

Muffler Dump Kits Include:
  • V-band flange already welded on
  • Turn-down
  • Steel flanges to add to your existing system
  • All necessary clamps
  • Rod to form hangers
HARM Mufflers lightweight custom exhaust dump kits

H.A.R.M. Mufflers‘ lightweight aluminum and titanium mufflers and exhaust system components are precision-made, here in the USA! Race cars running H.A.R.M. mufflers and exhaust components have shattered multiple class records.

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