Dynomax 39454 Stainless Steel Exhaust System

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Price: $385.48 $271.26   

Product Feature

• 100 per cent welded construction for maximum durability high performance muffler for street and track; stainless steel construction for lifelong protection with a limited lifetime warranty
• System contains all of the parts needed for easy and fast installation with the high flow Ultra Flo welded muffler
• Unique straight through design maximizes flow and power
• Exclusive CRF (Continuous Roving Fiberglass) for deep, powerful, true performance sound; won't blow out for long life; withstands temperatures of 1500 degrees Fahrenheit
• Continuous perf tube design maximizes sound absorption and minimizes turbulence

Product Description

Dynomax Ultra Flo welded performance stainless steel mufflers feature 100-percent welded construction for lifelong durability. The unrestricted, straight-through design dyno proven to flow up to 2,000 SCFM and support up to 2,000 horsepower. Each muffler uses our exclusive Continuous Roving Fiberglass (CRF) technology to absorb unwanted interior resonance while maintaining a deep performance tone. The pure unadulterated power of Dynomax Ultra Flo Welded mufflers are backed by a limited lifetime warranty and exclusive 90-day performance and sound guarantee.

Dynomax 39454 Stainless Steel Exhaust System Review

Installed on my 2008 GMC Sierra SLT crew cab 4WD. Fit like a charm. Getting the old exhaust off was more of a pain than installing this new exhaust. The sound is just what I wanted. Nice mean growl under load, and not obnoxious at cruising speeds. The only thing that bugs me a little bit is the drone when the truck kicks into 4 cylinder mode when cruising. Doesn't drone when in 8 cyl mode. You can hear the motor kick back and forth between the two modes just from the exhaust.

INSTALL TIP: Buy a couple new stainless steel bolts and lock nuts before you start the job. The flange on behind the cat has two studs that you will probably twist off like I did. I had to drill them out as I didn't have access to a nice enough torch to warm the flange so I could pop the studs out.

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