7 inch Muffler / Twin Long Series Resonators

SKU ADR079 Category
  • NZ Made!
  • 100% Quality Stainless Steel
  • Patented Spiral Louvre Baffle Technology/ AdrenalinR Perforated Baffle Design
  • 3 Stage Sound Absorption Medium
  • Suitable for High Tuned Street/Race Cars /Yes Rotary’s Too!!
  • Double Embossed Case
  • Inlet sizes are 63mm 76mm 89mm for rear mufflers 45mm/51mm/57mm/63mm for resonator range.
  • 3″ (76mm)resonator version $849.
  • Pack includes 7″X450mm Rear muffler and a twin pack of Torque chamber resonators.
  • Available in: dumpy, slash or straight tips



Who needs them?

With current law restrictions in New Zealand and constant policing your naturally aspirated or rotary vehicle may be parked up because it’s too loud. With no idea how loud your car is or what you can do to get out driving again, we are here to offer a solution.

This pack was specifically designed with rotary and naturally aspirated vehicles in mind. It combines the best of our perforated torque chamber resonators and our louvre baffle rear mufflers resulting in a better performing noise compliant vehicle.

Greater noise reduction

The Torque chamber resonators draw the sound out of the exhaust using our own perforated baffle design based on BMW race exhausts and our 3 stage sound absorption mediums. The chamber deepens the exhaust note while slightly increasing the back-pressure for a balancing effect on the incoming air/fuel mixture and the exhaust gases leaving the rear, resulting in a better performance.

The Louvre baffle rear muffler absorbs a different noise frequency. It disrupts and disperses soundwaves before they reach the Db meter. This reducing noise across the range significantly! It is common to see over a 10Db drop in noise levels just from fitting this package the AdrenalinR edge!!

Every single muffler we fabricate utilizes our 3 stage sound absorption methodology which consists of wrapping the baffle in exhaust grade stainless steel wool, ceramic matting and a layer of tightly woven needlemat fibreglass blanket.

  1. The stainless wool breaks up soundwaves and creates a barrier preventing the packing from breaking up and exiting the rear of the vehicle prolonging the life of each and every muffler.
  2. The ceramic matting absorbs noise and heat preventing the fibreglass from turning back to glass.
  3. The needlemat fibreglass blanket acts as the final noise insulator which results in quieter, deeper notes singing from the rear of your vehicle.

Superior construction

Our muffler bodies are embossed which adds significant strength to the muffler, eliminating unwanted resonance to provide an improved tone with a deeper note. The solid construction is more resilient to the rigours of daily use and scrape damage is minimized by our unique mounting strap design.

AdrenalinR Performance Mufflers have spotless consistent welds, we utilize Automated Welding Technology for superior welds.

Customised to suit

We all know that not all vehicles are created equal so we offer a variety of sizes that we can customise to suit your application. Whether it be at the track, strip, oval or getting legal on the road we will have you covered. Our factory is the leading performance muffler manufacturer in the country with all our own in house machinery we offer an extremely quick turnaround time, just ask!

Tip style

Dumpy, Slash, Short Straight, Medium Straight, Long Straight

Reso Length

Short Series (400mm), Long Series (530mm)

Reso inlet

Reso 45mm, Reso 51mm, Reso 57mm, Reso 63mm, Reso 76mm

Muffler inlet

63mm, 76mm, 89mm


Racing, Standard


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