MBRP Universal 4" Quiet Tone Muffler

From $139.99 to $244.99
Product Options
Metal Grade:
Universal - 4" Inlet/Outlet, 30" Overall
MBRP Performance Exhaust
$5 Price Beat Guarantee
  • Dual core technology provides optimal flow in conjunction with superior sound suppression
  • Perfect for over the road towing applications as cab noise is greatly reduced
  • Available in our Pro series (T304 stainless), XP series (T409 stainless) and Installer series (aluminized)
  • 4” inlet/outlet configuration that can replace any MBRP or competitor muffler in a 4” system
  • Over a full year of on road testing, this muffler works

Application Guide
4" Inlet, 4" Outlet, 30" Overall - T304 Stainless Steel    M1004
4" Inlet, 4" Outlet, 30" Overall - T409 Stainless Steel   
4" Inlet, 4" Outlet, 30" Overall - Aluminized Steel

Customer Reviews - Include your order number for a chance to win a $100 GiftCard

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(27 Ratings, 4 Reviews) Average Rating:
Just what I wanted
Paul (Montana) 3/28/2014 7:22 PM
Put the quiet tone 4" on my 01 Cummins with a 4" turbo back to dual 8" stacks. What a huge difference in sound compared to the strait pipe. At idle I can't hear the pipes from inside, and it doesn't become noticeable until 1600+. No drone on the highway which is great considering there's two big stacks right behind the cab. From what sound it does make it's a nice deep tone. If you want onnoxious sound then this isn't. If you want a quiet but throaty muffler then this is a good choice.
Re-Review after 500miles.
Jordan Drinkman (Downing, WI) 9/10/2012 11:13 PM
This muffler may work well, but I lost 3-4mpg dpending on driving distance. Im putting the delete pipe back in to get my mpg back. Wish I wouldnt have bought it....
quiet sound
Drinkman (downing wi) 8/22/2012 12:23 AM
Put this on my straight piped 6.0 powerstroke and it quieted the engine noise down, wish it would have quieted the turbo down a bit, but its not bad. Can actually drive into town again lol. Its a good buy overall
MBRP Muffler
Arlie A. (MT) 2/7/2012 9:32 PM
This muffler has the perfect sound and no drown down the highway. it makes my 01 Dodge sound amazing. Great severice from XDP and fast shipping.