Founded in 1986. We are the Inventor of the XPIPE and so much more! Our Exhaust Systems have been in every NASCAR from 1996- 2013, 11 years in the IROC series. We have 9 Daytona 500 Wins.With over 40+ championships under our belt. We have brought our Exhaust systems in countless Resto Mods, Muscle Cars, Classic, Dirt track cars and much more to you! 
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Dr. Gas Exhaust - Product Index
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Boom Tube (full-length, non-muffler type)
Ball and Cone Adapter Joint Set
Boom Tube Muffler
Boom Tube Muffler 4 trap Tip
Boom Tube Muffler Tip
Boom Tube Tip
Dr. Gas RevPro 3-Trap Muffler
Dr. Gas RevPro 4-Trap Muffler
Dr. Gas RevPro 5-Trap Muffler
Dr. Gas RevPro Reverse-flow Muffler
Dr. Gas RevPro Square Muffler
Dr. Gas RPMpro 3-Trap Mini Muffler
Dr. Gas Stainless Steel Tip
First l gen F-body GM.Universal Tailpipe Kit for Leaf-spring Cars
FreqMod Heavy-Duty Muffler
FreqMod Muffler
Universal X-Pipe Crossover Kit
X-Pipe Crossover (Junction Only)
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