Universal 4" MBRP Quiet Tone Muffler (M1004A)

Fits: Universal

The MBRP 4" Quiet Tone M1004A Muffler is a 4" inline muffler add-on for any 4" exhaust system. Built with the same high-quality aluminized steel as your exhaust system, the M1004A is a direct fit into any truck with a 4" exhaust kit. The 4" Muffler will help fight drone, and keep your exhaust note under control while maintaining a throaty aftermarket sound. 

Part Number: M1004A

• Universal
• 4" Inlet/Outlet
• Aluminized Steel
• Keeps Neighbors Happy

Dimensions:

• Total Length: 30"
• Body Length: 24"
• Inlet/Outlet: 4" 
• Diameter: 6" 

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• ?

  Will this help get rid of loud turbo whistle? My truck sounds like a jet when I first start it up, I'm trying to quiet it down a bit.

  Yes, this will help tone down the overall volume and take the "rasp" out of your exhaust, but it may not completely eliminate a loud, high-pitched turbo whistle on cold starts.

• ?

  If I buy the 4 inch straight pipe MBRP system, will this go in place of the straight pipe section without modification? If a guy wanted to swap out the straight pipe with a muffler before a road trip.

  Yes, the Quiet Tone Muffler is designed to be a direct swap for the standard MBRP muffler delete pipe found in their 4" straight pipe systems. You should be able to swap them for a road trip without cutting or welding.

• ?

  Does this muffler have packing in the chamber? Or is it hollow beyond the louvers that stick up on the interior? Will it remain quiet forever, or will it pack with (trapped) soot over time, eventually turning it into a straight pipe?

  This Quiet Tone Muffler features a spiral louvered core design and does not contain traditional packing material. Sound performance remains consistent over time, unaffected by packing burnout. Soot buildup may reduce muffling efficiency.