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

(28 Ratings, 5 Reviews) Average Rating:
Right Amount of Quiet
joe t (new jersey) 1/11/2016 9:19 AM
I have a 2014 ford. Did all the deletes and had it straight-piped for a couple weeks. It was just too loud driving around the neighborhood and too much drone on the highway. This muffler helped reduce some of the noise. Don't be under the impression this will make your truck "quiet". Mine still roars, but it certainly helps. I did not notice any difference in MPG's between the straight pipe and using this muffler. Hope this helps.
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.