Demon Flow Mufflers Series 2.0 NEW!!!

NEW 2.0 Demon Flows are 1.5mm thick 304SS Bodies with 201SS internal Perforated Tube. These mufflers use a unique combination of woven ceramic and stainless steel fibers to minimize unwanted drone whilst retaining the crisp high flow howl of your machine. For Max Flow, Race and HiPo street applications only. Demon Flow can handle up to 1500 HP with the right system!

Series 3.0 Customisable DemonFlow Mufflers 100% Built In Australia!

NEW 3.0 Demon Flows are 1.6mm thick 304SS Bodies with 2mm Thick End Caps. 201SS internal Perforated Tube. The Series 3.0 can be customised to suit your available space, pipe configuration and sound levels required. Tig welded and Aussie designed and built, this is our ultimate level product!



Engineering Services

Reaper Engineering specialists in taking the guess work out of getting the right combination for Race, HIPO street or Muscle Cars. Reaper uses the latest computational fluid dynamics and finite element analysis software. We are able to produce reports, plans and designs that more accurately specify what your combination needs to produce a specific power curve and peak output. Contact us to find out how we can help with your build.


The following video demonstrates the difference in tone and loudness that could be achieved from the ultra high flowing 304 stainless steel Demonflow race series mufflers. Lightweight 304 grade SS mufflers provide superior protection form rust and fatigue while TIG welded seems eliminate burst failure due to backfires. Hybrid Ceramic Steel core produces a deep yet crisp HIPO or Muscle car sound, without the drone!